A Stereo -Atlas of Ostracod Shells

edited by R. H. Bate, D. J. Horne, J. W. Neale,

and David J. Siveter

Volume 13, Part 2; 30th November, 1986

Published by the British Micropalaeontological Society, London

Editors

Dr R.H. Bate, SSI (UK) Ltd., Tannery House, Tannery Lane, Send, Woking, Surrey GU23 7EF.

Dr D. J. Horne, Department of Geology, City of London Polytechnic, Walburgh House, Bigland Street,

London El 2NG.

Prof. J.W. Neale, Department of Geology, The University, Hull HU6 7RH.

Dr David J. Siveter, Department of Geology, The University, Leicester LEI 7RH.

Editorial Board

Dr G. Bonaduce, Stazione Zoologica, 80121 Napoli, Italy.

Dr J.-P. Colin, Esso Production Research - European, 213 Cours Victor Hugo, 33321 Begles, France.

Dr P. De Deckker, Research School of Pacific Studies, Australian National University, PO Box 4,

Canberra ACT 2600, Australia.

Dr D. van Harten, Universiteit van Amsterdam, Geologisch Instituut, Nieuwe Prinsengracht 130,

Amsterdam, The Netherlands.

Dr I. Purper, Departamento de Paleontologia e Estratigrafia, UFRGS, 90 000 Porto Alegre RS, Brazil.

Dr R.E.L. Schallreuter, Universitat Hamburg, Geologisch-Palaontologisches Institut, Bundesstrasse

55, D 2000 Hamburg 13, West Germany.

Officers of the British Micropalaeontological Society

Chairman Prof. B.M. Funnell, School of Environmental Sciences, University of East Anglia, Norwich

NR4 7TJ.

Secretary Dr P.P.E. Weaver, Institute of Oceanographic Sciences, Brook Road, Wormley, Godaiming,

Surrey GU8 5UB. Tel: 0428-79 4141.

Treasurer Dr J.E. Whittaker, Department of Palaeontology, British Museum (Natural History),

Cromwell Road, London SW7 5BD. Tel: 01-589 6323.

Journal Editor Dr. L. M. Sheppard, SSI (U.K.) Limited, Chancellor Court, 20 Priestly Road, Guildford.

Surrey GU2 5YL. Tel: (0483) 506605.

Newsletter Editor Dr R.L. Austin, Department of Geology, University of Southampton, Southampton

S09 5NH. Tel: (0703) 559122/557941

Conodont Group Chairman Dr R.J. Aldridge, Department of Geology, University of Nottingham,

University Park, Nottingham NG7 2RD.

Secretary Dr P.M. Smith, Department of Geology, University of Nottingham, University Park.

Nottingham NG7 2RD. Tel: (0602) 506101.

Foraminifera Group Chairman Dr P. Copestake, Britoil, 150 St. Vincent Street, Glasgow G2 5LJ.

Secretary Dr D.J. Shipp, Robertson Research Int. Limited. Ty’n-y-Coed, Llanrhos, Llandudno LL30

ISA. Tel: (0492) 81811.

Microplankton Group Chairman Dr G.L. Eaton, BP Research Centre, Chertsey Road, Sunbury-on-

Thames, Middlesex TW16 7LN.

Secretary Dr J.B. Riding, British Geological Survey, Keyworth, Nottingham NG12 5GG. Tel: (06077)

6111.

Ostracod Group Chairman Dr D.J. Horne, Geology Department, City of London Polytechnic,

Walburgh House, Bigland Street, London El 2NG.

Secretary Dr C. Maybury, Department of Geology, University College of Wales. Aberystwyth, Dyfed

SY23 3DB. Tel: (0970) 3111.

Palynology Group Chairman Dr M.C. Boulter, N.E. London Polytechnic, Romford Road, London E15

4LZ.

Secretary Dr J.E. A. Marshall, Departnrerit of Geology, The University, Southampton S09 5NH. Tel:

(0703) 559122.

Calcareous Nannofossil Group Chairman Mr M. Jakubowski, Robertson Research Int. Limited,

Ty'n-y-Coed, Llanrhos, Llandudno, Gwynedd, LL30 ISA.

Secretary Dr J. Crux, BP Research Centre, Chertsev Road, Sunbury on Thames, Middlesex. Tel:

(09327) 63062.

Instructions to Authors

Contributions illustrated by scanning electron micrographs of Ostracoda in stereo-pairs are invited.

Format should follow the style set by the majority of papers in this issue. Descriptive matter apart from

illustrations should be cut to a minimum; preferably each plate should be accompanied by one page of

text only. Blanks to aid in mounting figures for plates may be obtained from any one of the Editors or

Editorial Board. Completed papers should be sent to Dr David J. Siveter.

The front cover shows left valves of a tecnomorph (upper figure; PMO 113.64) and a female (PMO

113.169) of Slependia armata (Henningsmoen, 1954); from the Llandovery Series, Silurian, at Slependen

in Asker, Norway. Both specimens are in the Paleontologisk Museum, University of Oslo. See Pollicott

& Siveter, Stereo-Atlas of Ostracod Shells , 12 (17), 85-92, 1985.

Printed in the UK by BPCC Northern Printers Ltd., Stanley Road, Blackpool FY1 4QN

Member of The BPCC Group

A Stereo -Atlas of Ostracod Shells

edited by R. H. Bate, D. J. Horne, J. W. Neale,

and David J. Siveter

Volume 13, 1986

Part 1 (pp.1-76); 30th May, 1986

Part 2 (pp. 77-151); 30th November, 1986

Published by the British Micropalaeontological Society, London

Stereo-Atlas of Ostracod Shells 13 ii

Contents

Contents

1 On Cytheretta (Cytheretta) semipunctata (Bornemann); by R. W. Weiss 1

2 On Cytheretta ( Cytheretta ) jurinei (v. Munster); by R. H. Weiss 9

3 On Paracytheromorpha rimafossa Maybury & Whatley gen. et sp. nov.; 17

by C. A. Maybury & R. C. Whatley

4 On Retinoda sulcata (Knupfer): by R. E. L. Schallreuter 21

5 On Wehrlia olbertzae Schallreuter; by R. E. L. Schallreuter 25

6 On Beyrichia (Altibeyrichia) kiaeri Henningsmoen; by P. D. Pollicott 29

7 On Aurila woutersi Horne sp. nov.; by D. J. Horne 33

8 On Veenia (Nigeria) nigeriensis Reyment; by R. Reyment & E. Reyment 39

9 On Bairdia jammuensis Singh & Tewari, P. Singh 47

10 On Paracypris jhingrani Singh & Tewari: by P. Singh 51

11 On Eocytheridea kirtlingtonensis Bate & Mellish sp. nov.; by R. H. Bate & C. Mellish 55

12 On Cythereis lindiensis Bate; by R. H. Bate & C. Mellish 59

13 On Navarracy there estellensis Colin & Rodriguez- Lazaro gen. et sp. nov.; 63

by J. P. Collin & J. Rodriguez-Lazaro

14 On Kefiella maresi Donze & Said; by J. P. Colin 67

15 On Eucythere argus (Sars); by D. J. Horne & A. Rosenfeld 71

16 On Ambostracon europea Maybury & Whatley sp. nov.; by C. A. Maybury & R. C. Whatley

17 On Ambostracon costaforma Whatley & Maybury sp. nov.; by R. C. Whatley & C. A. Maybury 81

18 On Ambostracon delicata Whatley & Maybury sp. nov.; by R. C. Whatley & C. A. Maybury 85

19 On Ambostracon perfecta Maybury & Whatley sp. nov.; by C. A. Maybury & R. C. Whatley 89

20 On Roundstonia magna Maybury & Whatley sp. nov.; by C. A. Maybury & R. C. Whatley 93

21 On Roundstonia minima Whatley & Maybury sp. nov.; by R. C. Whatley & C. A. Maybury 97

22 On Leguminocythereis chittagongensis Neal & Ahmed sp. nov.; J. W. Neale & S. T. Ahmed 101

23 On Costa himchariensis Ahmed sp. nov.; by S. T. Ahmed 105

24 On Costa obliquifossa Ahmed sp. nov.; S. T. Ahmed 109

25 On Nigeroloxoconcha oniseguni Reyment; by R. A. Reyment & E. R. Reyment 113

26 On Nigeroloxoconcha oyesesei Reyment; by R. A. Reyment & E. R. Reyment 117

27 On Togoina attitogonensis Apostolescu; by R. A. Reyment, E. R. Reyment & S. Majoran 121

28 On Iberocypris cornutus Babinot; by J. F. Babinot 129

29 On Parapokornyella taxyae (Babinot); J. F. Babinot 133

30 On Paracandona occitanica Babinot & Tambareau sp. nov.; by J. F. Babinot & Y. Tambareau 137

31 On Bolbihithis abdominalis Schallreuter; by R. E. L. Schallreuter 145

32 Index for Volume 13, 1986 149

Stereo-Atlas of Ostracod Shells 13 (16) 77-80 (1986) Ambostracon europea (1 of 4)

595.337.14 (118.22) (420 : 162.006.50 + 44 : 162.002.48) : 551.351 + 552.52

ON AMBOSTRACON EUROPEA MAYBURY & WHATLEY sp. nov.

by Caroline A. Maybury & Robin C. Whatley

(University College of Wales, Aberystwyth)

Ambostracon europea sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

British Museum (Nat. Hist.) no. OS 12834, cf LV.

[Paratypes: British Museum (Nat. Hist.) nos. OS 12833, OS 12835 - OS 12838],

Mixed sample, Sample No. 1, Vicarage Pit. St. Erth, Cornwall, England (Nat. Grid Ref. SW

556352); Upper Pliocene.

Latin, with reference to the occurrence of the species in Europe and the first record of the genus

(as such) there.

British Museum (Nat. Hist.) nos. OS 12834 (holotype, cf LV:P1. 13, 78, fig. 1), OS 12835

(paratype, cf RV:P1. 13, 78, fig. 2), OS 12833 (paratype, 9 LV:P1. 13, 78, fig. 3, PI. 13, 80, fig. 4),

OS 12836 (paratype, cf LV:P1. 13, 80, fig. 1), OS 12838 (paratype, juv. RV:P1. 13, 80, fig. 2), OS

12837 (paratype, juv. LV:P1. 13, 80, fig. 3). All paratypes from the type locality and type horizon

with the exception of specimen OS 12833 which is from a sample of shell-rich sand. Le Temple du

Cerisier, SW of Rennes (approx, lat. 48° 07'N, long. 1° 41'W), NW France; Upper Pliocene,

Redonian (see C. Maybury, Taxonomy, Palaeoecology and Biostratigraphy of Pliocene Benthonic

Ostracoda from St. Erth and North West France, unpubl. PhD thesis, Univ. Wales, 1, 3-29, 1985

for sample details).

A very large species of Ambostracon characterised by prominent costae, well developed

intercostate pore conuli and a weakly developed reticulum. The posterodorsal costa is curved and

terminates below and just behind the eye tubercle and the anterodorsal costa is submarginal and

Explanation of Plate 13, 78

Figs. 1, cf LV, ext. lat. (holotype, OS 12834, 1,000 fim long); fig. 2, cf RV, ext. lat. (paratype, OS 12835, 1,000 /u.m long); fig. 3, 9

LV, ext. lat. (paratype, OS 12833, 820 /urn long). Scale A (200 /am; x 66), figs. 1-3.

Stereo-Atlas of Ostracod Shells 13, 79 Ambostracon europea (3 of 4)

Diagnosis (contd.): extends from the mid-dorsal area of the valve through the eye tubercle to mid-anterior. The

median costa is bifurcate anteriorly and is interupted anteromedianly by an irregularly-shaped

tubercle. The ventral costa is gently curved and is parallel to the median costa. Anteriorly and

caudally there is a narrow, frill-like flange. Marginal pore canals numerous, simple, straight and

entire. Hinge holamphidont. Central muscle scars anteromedian in position, comprising a near

vertical row of 4 adductors with the dorsomedian scar divided and 3 subcircular frontal scars in a

slightly curved row. There are 3 dorsal scars close to the anterior section of the hinge’s median

element and a suboval fulcral point situated above and between the adductor and frontal scar

rows.

Remarks: This species resembles Elofsonella amberii Carbonnel, 1969 (in: J. W. Neale (ed.), The

Taxonomy, Morphology and Ecology of Recent Ostracoda, 85-92, pi. 1, Oliver & Boyd,

Edinburgh); a Tortonian (Upper Miocene) species from the Rhone Valley which clearly belongs to

Ambostracon. The disposition of the costae is similar in both species; but in A. europea they are

less robust and more ‘blade like’. The two species also differ in size ( Elofsonella amberii, cf 725

pm long, 9 690 pm long) and in intercostate ornamental detail. Although the ornament of the

latter species is highly variable none of the variants which Carbonnel describes closely approach

the morphology of A. europea.

Species of Ambostracon have been recorded from the Americas, South Africa, Australia,

Japan and ? Turkey (V. H. Valicenti, Sixth Intern. Ostracod Symposium, Saalfelden, 97, 1977). A

total of seven species (four occurring in the Upper Pliocene deposits of St. Erth and NW France

and three apparently confined to NW France) have been recovered by the authors, making this the

first record of the genus, as such, in Europe.

Distribution: Ambostracon europea has been recorded from the Redonian deposits of Le Temple du Cerisier,

Gite d’Apigne, Apigne (Borehole II), L’Orchere Pincourt and a mixed sample from NW France;

in addition to the Upper Pliocene deposits of St. Erth (Sample Nos. 1,7,14,22-23, 27-29). See

Maybury, op. cit. for sample details.

Explanation of Plate 13, 80

Fig. 1, cf LV, int. lat. (paratype, OS 12836, 1,200 pm long); fig. 2, juv. RV, ext. lat. (paratype, OS 12838, 610 /urn long); fig. 3, juv.

LV, ext. lat. (paratype, OS 12837, 570 /um long); fig. 4, 9 LV, muse. sc. (paratype, OS 12833, 820 /um long).

Scale A (200 /um; x 66). figs. 1-3; scale B (10 /urn; x 330), fig. 4.

Stereo-Atlas of Ostracod Shells 13, 78

Ambostracon europea (2 of 4)

•>•••<••»

Stereo-Atlas of Ostracod Shells 13, 80

Ambostracon europea (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (17) 81-84 (1986) Ambostracon costaforma ( 1 of 4)

595.337.14 (118.22) (44 : 162.002.48) : 551.351 + 552.51

ON AMBOSTRACON COSTAFORMA WHATLEY & MAYBURY sp. nov.

by Robin C. Whatley & Caroline A. Maybury

(University College of Wales, Aberystwyth)

Ambostracon costaforma sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

British Museum (Nat. Hist.) no. OS 12110, 9 LV.

[Paratypes: British Museum (Nat. Hist.) nos. OS 12111 - OS 12113],

Shell-rich sand, Le Temple du Cerisier, SW of Rennes (approx, lat. 48° 07'N, long. 1° 41' W), NW

France; Upper Pliocene, Redonian.

Latin, referring to the prominent ornamental ridges of this species.

British Museum (Nat. Hist.) nos. OS 12110 (holotype, 9 LV:P1. 13, 82, fig. 1), OS 12111

(paratype, cf LV:P1. 13, 82, fig. 2), OS 12112 (paratype, cf RV:P1. 13, 82, fig. 3), OS 12113

(paratype, cf RV:P1. 13, 84, fig. 1), OS 12114 (paratype, juv. RV:P1. 13, 84, fig. 2), OS 12li5

(paratype, cf LV:P1. 13, 84, figs. 3,4). All from the type locality and type horizon.

A large, subrectangular species of Ambostracon with a prominent curved, ocular ridge and

conspicuous dorsal, median and ventral costae. The anterodorsal and posterodorsal costae are

curved and both overhang the dorsal margin. The anterodorsal costa passes behind and is obscured

by the posterodorsal costa; the latter is continuous with the median costa. There is a relatively

narrow break in the median costa anteromedianly (in the position of the central muscle scar field)

and posteriorly, just above the caudal process, is a short, blunt spine. Intercostally the lateral

surface is reticulate.

Explanation of Plate 13, 82

Fig. 1, 9 LV, ext. lat. (holotype, OS 12110, 810 /xm long); fig. 2, cf LV, ext. lat. (paratype, OS 12111, 810 /urn long); fig. 3, 9 RV, ext.

lat. (paratype, OS 12112, 810 /u m long). Scale A (200 /urn; x 73), figs. 1-3.

Stereo-Atlas of Ostracod Shells 13, 83

Ambostracon costaforma (3 of 4)

Remarks: The juxtaposition of the costae of this species is similar to that of A. europea Maybury & Whatley

(, Stereo-Atlas Ostracod Shells, 13, 77-80, 1986). The median ridge in the latter species, however, is

somewhat expanded anteromedianly to form a tubercle; unlike that of A. costaforma which

possesses a narrow break in its length. In A. europea the median ridge is bifurcate anteriorly,

whereas that of A. costaforma does not divide. Pore conuli are more numerous on A. costaforma.

Distribution: In addition to its occurrence at the type locality in France, this species has also been recovered

from the Upper Pliocene deposits at St. Erth (Sample No. 1) (See J. -P. Margerel, Les

Foraminiferes du Redonien. Systematique, Repartition stratigraphique, Paleoecologie, Nantes, 1,

8-26, 1968 and C. Maybury, Taxonomy, Palaeoecology and Biostratigraphy of Pliocene Benthonic

Ostracoda from St. Erth and North West France, unpubl. PhD thesis, Univ. Wales, 1, 4-5, 1985 for

further details of the samples from France and Britain respectively).

Explanation of Plate 13, 84

Fig. 1, Cf RV, int. lat. (paratype, OS 12113, 790 /xm long); fig. 2, juv. RV, ext. lat. (paratype, OS 12114, 580 /u.m long); figs. 3,4, cf

LV, (paratype, OS 12115, 770 /xm long): fig. 3, ant. hinge element; fig. 4, post, hinge element.

Scale A (200 /xm; x 73), figs. 1,2; scale B (100 /xm; x 185), fig. 3,4.

Stereo-Atlas of Ostracod Shells 13, 84

Ambostracon costaforma (4 of 4)

Ambostracon costaforma (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 82

Stereo- Atlas of Ostracod Shells 13 ( 18) 85-88 ( 1986) Ambostracon delicata ( 1 of 4)

595.337.14 (118.22) (44 : 162.002.48 + 44 : 162.002.49) : 551.351 + 552.51 + 552.54

ON AMBOSTRACON DELICATA WHATLEY & MAYBURY sp. nov.

by Robin C. Whatley & Caroline A. Maybury

(University College of Wales, Aberystwyth)

Ambostracon delicata sp. nov.

British Museum (Nat. Hist.) no. OS 12910, $ LV.

[Paratypes: British Museum (Nat. Hist.) nos. OS 12911 - OS 12913].

Grey marl, depth 2-7m, The Martineau Pit on the South facing slope of the Petite Boulonge

Valley, Palluau I (approx, lat. 46° 48'N, long. 1° 37'W), near Le Pas, NW France; Upper Pliocene,

Redonian.

Latin, from the delicate nature of the reticulum of this species.

British Museum (Nat. Hist.) nos. OS 12910 (holotype, $ LV:P1. 13, 86, fig. 1; PI. 13, 88, figs. 2-3),

OS 12911 (paratype, $ RV:P1. 13, 86, fig. 2; PI. 13, 88, fig. 4), OS 12912 (paratype, cf LV:P1. 13,

86, fig. 3), OS 12913 (paratype, juv. RV:P1. 13, 88, fig. 1). Specimen OS 12912 from the type

locality and type horizon; specimen OS 12911 from fine, glauconitic, grey sand, depth 26.7 -

32.4m, Apigne (Borehole II), SW of Rennes (approx, lat. 48° 07'N, long. 1° 41'W), NW France;

and specimen OS 12913 from light-grey fine to medium grained sand, Le Bosq d’Aubigny (approx,

lat. 49° 07'N, long. 1° 05'W), near St. Lo, NW France; all Upper Pliocene, Redonian. (See J. -P.

Margerel, Les Foraminiferes du Redonien, Systematique, Repartition stratigraphique, Paleoecolo-

gie, Nantes, 1, 8-26, 1968 for further geographical and sample details).

A medium to large species of Ambostracon with a strongly developed ocular ridge, but a rather

inconspicuous eye tubercle. The median costa bifurcates anterior of the weakly developed

subcentral tubercle and the resultant rami are parallel. Intercostate reticulum well developed with

its dominant component obliquely disposed posteroventrally.

Explanation of Plate 13, 86

Fig. 1, $ LV, ext. lat. (holotype, OS 12910, 710 pun long); fig. 2, $ RV, ext. lat. (paratype, OS 12911, 680 pi m long); fig. 3, cf LV, ext.

lat. (paratype, OS 12912, 660 pun long). Scale A (200 pirn; x 85), figs. 1-3.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

Stereo- Atlas of Ostracod Shells 13, 87 Ambostracon delicata (3 of 4)

Remarks: This species is similar to Ambostracon perfecta Maybury & Whatley ( Stereo-Atlas Ostracod Shells,

13, 89-92, 1986). The two species are costate and reticulate; but in A. perfecta the reticulae are

more regularly defined and the costae less pronounced than in A. perfecta, and whereas the ocular

ridge of A. perfecta is continuous with the ventral costa, it terminates anteromarginally at about

mid-height in A. delicata.

Distribution: This species is a rare constituent of the Redonian, Upper Pliocene faunas of Apigne (Borehole II),

Le Temple du Cerisier, Le Bosq d'Aubigny and Palluau I, NW France.

Explanation of Plate 13, 88

Fig. 1, juv. RV, ext. lat. (paratype, OS 12913, 610 pim long); figs. 2,3, $ LV (holotype, OS 12910, 710 pirn long): fig. 2, ant. hinge

element; fig. 3, post, hinge element; fig. 4, $ RV, muse. sc. (paratype, OS 12911, 680 pirn long).

Scale A (200 pirn; X 85), fig. 1; scale B (40 pirn; x 352), figs. 2,3; scale C (20 pirn; x 310), fig. 4.

Stereo-Atlas of Ostracod Shells 13, 86

Ambostracon delicata (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 88

Ambostracon delicata (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (19) 89-92 (1986) Ambostracon perfecta (1 of 4)

595.337.14 (118.22) (44 : 162.002.48 + 44 : 162.002.49) : 551.351 + 552.51

ON AMBOSTRACON PERFECTA MAYBURY & WHATLEY sp. nov.

by Caroline A. Maybury & Robin C. Whatley

(University College of Wales, Aberystwyth)

Ambostracon perfecta sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

British Museum (Nat. Hist.) no. OS 12105, $ RV.

[Paratypes: British Museum (Nat. Hist.) nos. OS 12106 - OS 12109],

Fine glauconitic, grey sand between 26. 7-32. 4m, Apigne (Borehole II), SW of Rennes (approx,

lat. 48° 07'N, long. 1° 41'W), NW France; Upper Pliocene, Redonian.

Latin, from the pleasingly regular form of the ornament of this species.

British Museum (Nat. Hist.) nos. OS 12105 (holotype, $ RV.P1. 13, 90, fig. 1), OS 12106

(paratype, cf LV:P1. 13, 90, fig. 2), OS 12107 (paratype, cf RV:P1. 13, 90, fig. 3), OS 12108

(paratype, cf RV:P1. 13, 92, figs. 1,3), OS 12109 (paratype, juv. LV:P1. 13, 92. fig. 2). Specimens

OS 12107 and OS 12109 are from Le Temple du Cerisier (approx, lat. 48° 07'N. long. 1° 41'W) and

Le Bosq d’Aubigny (approx, lat. 49° 07'N, long. 1° 05'W), NW France; Upper Pliocene,

Redonian) respectively. The remaining specimens are from the type locality and type horizon.

A large, regularly reticulate species of Ambostracon with two obliquely disposed posterodorsal

ribs between the curved posterodorsal costa and poorly defined posteromedian costa. Ocular ridge

continuous with the longitudinal ventral costa. Subcentral tubercle marked by the presence of

fossae with irregularly-shaped outlines.

Explanation of Plate 13, 90

Fig. 1, $ RV, ext. lat. (holotype, OS 12105, 740 /urn long); fig. 2, cf LV, ext. lat. (paratype. OS 12106, 760 /urn long); fig. 3, cf RV,

ext. lat. (paratype, OS 12107, 770 /xm long);

Scale A (200 /am; x 83), figs. 1-3.

Stereo- Atlas of Ostracod Shells 13, 91 Ambostracon perfecta (3 of 4)

Remarks: This species resembles A. hulingsi McKenzie & Swain (Jour. Pal. Tulsa, Okla., 41 (2), 292, pi. 29,

fig. 13, text-fig. 16, 1967), a Recent species from Scammon Lagoon, on the coast of California.

The two species differ in size, shape and ornament, A. perfecta being larger and possessing a more

regularly disposed reticulum. The dorsal marginal ‘bulge in A. hulingsi is directly above the eye

spot, whereas it is posterior to the eye spot in the present species and occurs only in the RV.

Distribution: Upper Pliocene, Redonian of NW France at Apigne (Gite d’Apigrie, Borehole II), Le Bosq

d'Aubigny, Le Temple du Cerisier and Palluau I (see J.-P. Margerel, Les Foraminiferes du

Redonien. Systematique, Repartition stratigraphique, Paleoecologie, Nantes, 1, 8-26, 1968 for

geographical and stratigraphical details) and Upper Pliocene of St. Erth (Sample Nos. 1, 14, 18

and 29), Cornwall, England (see C. Maybury, Taxonomy, Palaeocology and Biostratigraphy of

Pliocene, Benthonic Ostracoda from St. Erth and North West France, unpubl. PhD thesis, Univ.

Wales, 1, 4-5, 1985 for further details of the samples from Britain).

Explanation of Plate 13, 92

Figs. 1,3, cf RV (paratype, OS 12108, 160pm long): fig. 1, int. lat; fig. 3, muse, sc.; fig. 2, juv. LV, int. lat. (paratype OS 12109,

600/um long).

Scale A (200/um; x 83) figs. 1,2; scale B (100/um; x 205) fig. 3.

Stereo- Atlas of Ostracod Shells 13, 90

Ambostracon perfecta (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 92

Ambostracon perfecta (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (20) 93-96 (1986) Roundstonia magna ( 1 of 4)

595.337.14 (118.22) (44 : 162.002.48 + 44 : 162.002.46) : 551.351 + 552.51

ON ROUNDSTONIA MAGNA MAYBURY & WHATLEY sp. nov.

by Caroline A. Maybury & Robin C. Whatley

(University College of Wales, Aberystwyth)

Roundstonia magna sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

British Museum (Nat. Hist.) no. OS 12896, 9 LV.

[Paratypes: British Museum (Nat. Hist.) nos. OS 12897 - OS 12901].

Fine glauconitic, grey sand, depth 26.7 - 32.4m, Apigne (Borehole II), SW of Rennes (approx, lat.

48° 07'N, long. 1° 41'W) NW France; Upper Pliocene, Redonian.

Latin, alluding to the comparatively large size of this species with respect to the type species,

Roundstonia globulifera (Brady, 1868). (Trans. Linn. Soc. Lond., 26, 406, pi. 31, fig. 42).

British Museum (Nat. Hist.) nos. OS 12896 (holotype, 9 LV:P1. 13, 94, fig. 1), OS 12897

(paratype, cf RV:P1. 13, 94, fig. 2), OS 12898 (paratype, cf RV:P1. 13, 94, fig. 3), OS 12899

(paratype, cf RV:P1. 13, 96, fig. 1), OS 12900 (paratype, 9 car.: PI. 13, 96. fig. 2), OS 12901

(paratype, cf car.: PI. 13, 96, fig. 3). All paratypes from the shell-rich sand of Le Temple du

Cerisier, SW of Rennes (approx, lat. 48° 07'N, long. 1° 41 'W), NW France; except for specimen

OS 12899 which is from the coarse, shell-rich, argillaceous, grey sand of L’Aubier. SE of the

Grand-Landes forest on the right bank of the river Grande-Villeneuve (approx, lat. 46° 54'N.

long. 1° 37'W), NW France: Upper Pliocene, Redonian.

Explanation of Plate 13, 94

Fig. 1, 9 LV, ext. lat. (holotype, OS 12896, 600 p.m long); fig. 2, 9 RV, ext. lat. (paratype. OS 12897. 560 pun long); fig. 3. cf RV.

ext. lat. (paratype, OS 12898, 610 p.m long).

Scale A (200 p,m; x 100), figs. 1-3.

Stereo-Atlas of Ostracod Shells 13, 95 Roundstonia magna (3 of 4)

Diagnosis: A medium-sized species of Roundstonia with a reticulate ornament of subcircular fossae and wide,

smooth muri. Large, tubercular sub-alar process in female, more subdued in male; anterodorsal

tumescence below eye tubercle, also more prominent in female. Median element of gongylodont

hinge smooth.

Remarks: This species and Roundstonia minima Whatley & Maybury ( Stereo-Atlas Ostracod Shells, 13,

97-100, 1986) are included in Neale’s hitherto monotypic genus, Roundstonia ( Revue Micro-

paleont., 16(2), 125-131, 1973). His generic diagnosis, however, is slightly emended to incorporate

these two species which are notably smaller and larger respectively than the type species and

which, while possessing undulose to subnodose surfaces, are not noded in the same manner as R.

globulifera and possess a smooth median hinge element.

R. magna differs from the type species in size (the holotype cf LV of R. globulifera is 467

gm long), in its coarser reticulation and its lack of weakly developed crenulae on the median hinge

element. It also lacks the details of the nodose exterior of R. globulifera, although its surface is

somewhat undulose and is swollen in approximately the same areas as the nodes occur on R.

globulifera.

Distribution: The species has been recovered from the Redonian, U. Pliocene deposits of Apigne (Gite

d’Apigne, Borehole II, Le Temple du Cerisier) and L’Aubier, NW France (see J. -P. Margerel,

Les Foraminiferes du Redonien. Systematique, Repartition stratigraphique, Paleoecologie, Nantes,

1, 8-26, 1968 for geographical, stratigraphical and sample details).

Explanation of Plate 13, 96

Fig. 1, cf RV, int. lat. (paratype, OS 12899, 610 gm long); fig. 2, 9 car., ext. dors, (paratype, OS 12900, 610 /am long): fig. 3, cf car.,

ext. dors, (paratype, OS 12901, 620 /u.m long).

Scale A (200 fj. m; x 100), figs. 1-3.

Roundstonia magna (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 94

Stereo-Atlas of Ostracod Shells 13, 96

Roundstonia magna (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (21) 97-100 (1986) Roundstonia minima (l of 4)

595.337.14 (118.22) (420 : 162.006.50) : 551.351

ON ROUNDSTONIA MINIMA WHATLEY & MAYBURY sp. nov.

by Robin C. Whatley & Caroline A. Maybury

(University College of Wales, Aberystwyth)

Roundstonia minima sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

British Museum (Nat. Hist.) no. OS 12902, LV.

[Paratypes: British Museum (Nat. Hist.) nos. OS 12903 - OS 12904],

Mixed sample, Sample No. 1, Vicarage Pit, St. Erth, Cornwall, England (Nat. Grid Ref. SW

556352); Upper Pliocene.

Latin, referring to the very small size (300/xm long) of the adults of this species.

British Museum (Nat. Hist.) nos. OS 12902 (holotype, LV: PI. 13, 98, figs. 1,3; PI. 13, 100, fig. 4),

OS 12903 (paratype, RV: PI. 13, 98, figs. 2,4), OS 12904 (paratype, RV: PI. 13, 100, figs. 1-3).

Specimens OS 12903 and OS 12904 from the type locality and type horizon, sample nos. 28 and 2

respectively. (See C. Maybury, Taxonomy, Palaeoecology and Biostratigaphy of Pliocene

Benthonic Ostracoda from St. Erth and North West France, unpubl. PhD thesis, Univ. Wales, 1,

4-5, 1985 for sample details).

A very small cuneiform species of Roundstonia with subrounded cardinal angles. The lateral

surface is undulose, reticulate and bears a boss-like sub-alar node posteroventrally and further

poorly developed subnodose areas anterodorsally and posterodorsally. From the anterodorsal

subnodose area a sinuous rib extends anteroventrally. The selvage is prominent ventrally and the

gongylodont hinge of the RV possesses an ant. terminal socket which is comma-shaped and arches

over a weakly defined, boss-like tooth; median element smooth.

Explanation of Plate 13, 98

Figs. 1,3, LV (holotype, OS 12903, 300/xm long): fig. 1, ext. lat. ; fig. 3, ext. obi.; figs. 2,4. RV (paratype. OS 12903, 300/xm long): fig.

2, ext. lat.; fig. 4, ext. vent. Scale A (100/xm; x 200), figs. 1-4.

Stereo-Atlas of Ostracod Shells 13, 99

Roundstonia minima (3 of 4)

Remarks: This species resembles Roundstonia magna Maybury & Whatley (Stereo-Atlas Ostracod Shells, 13,

93-96, 1986) internally and in the overall configuration of its ornament and undulose nature of its

lateral surfaces. The two species differ in size, lateral outline (the valves of R. minima are more

tapered towards the posterior than those of R. magna) and in ornamental detail (the muri of R.

minima are absolutely and relatively wider and the fossae smaller than those of R. magna and the

former species possesses a distinct, curved, anteroventral rib which is absent in the latter). In

addition, the marginal rim of R. magna is clearly defined, but inconspicuous in R. minima.

Sexual dimorphism was not observed in R. minima, possibly due to the small number of

individuals recovered.

Distribution: R. minima is confined to the Upper Pliocene deposits of St. Erth (Sample Nos. 1,2,27,28), where it

is a rare constituent of the ostracod fauna.

Explanation of Plate 13, 100

Figs. 1-3, RV (paratype OS 12904, 300/xm long): fig. 1, int. lat.; fig. 2, ant. hinge element; fig. 3, post, hinge element; fig. 4, LV, muse,

sc. (holotype, OS 12902, 300/xm long).

Scale A (100/xm; x 200), fig. 1; scale B (40/xm; x 500), figs. 2,3; scale C (10/xm; x 900), fig. 4.

Roundstonia minima (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 98

Stereo-Atlas of Ostracod Shells 13, 100

Roundstonia minima (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (22) 101-104 (1986) Leguminocythereis chittagongensis (1 of 4)

595.337.114 (118.2) (549.2 : 161.092.21) : 551.35 + 552.54

ON LEGUMINOCYTHEREIS CHITTAGONGENSIS

NEALE & AHMED sp. nov.

by John W. Neale & S. T. Ahmed

(University of Hull, England & University of Rajshahi, Bangladesh)

Leguminocythereis chittagongensis sp. nov.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

University of Hull coll. no. HU. 335. T. 17; O' RV.

[Paratypes: eight specimens mounted as HU.335.T.15,16, 18-23].

Himchari, in the Inani Anticline, south of Cox’s Bazar, Bangladesh; fine, pale-grey sandstone

representing a marine intercalation of probable late Miocene age in predominantly non-marine

sediments.

From Chittagong, Bangladesh.

University of Hull coll. nos. HU.335.T.15 (9 LV:P1. 13, 102, fig. 1), HU.335.T.19 (9 LV:P1. 13,

102, fig. 2), HU. 335. T. 17 (holotype, cf RV:P1. 13, 104, fig. 1), HU.335.T.20 (9 car.: PI. 13, 104.

fig. 2). All from the type locality and horizon.

An elongate species of Leguminocythereis whose prominent longitudinal ribs form a triangular

pattern with minor transverse ribs breaking up the inter-costal spaces to give either equidimension-

al or elongate fossae. There are approximately 40 fine straight or slightly curved marginal pore

canals anteriorly and about 25 similar canals in the posterior half of the shell. There are no

vestibules and the frontal muscle scar when well seen consists of two contiguous scars.

Explanation of Plate 13, 102

Fig. 1, 9 LV, int. lat. (HU.335.T.15, 1050 gm long); fig 2, 9 LV, ext. lat. (HU.335.T.19, 1110 gm long).

Scale A (200 gm; X 92), fig. 1; scale B (200 gun; x 84), fig. 2.

Stereo-Atlas of Ostracod Shells 13, 103 Leguminocythereis chittagongensis (3 of 4)

Remarks: This species agrees well with the current interpretation of Leguminocythereis Howe, 1936 and

differs from Thalmannia LeRoy, 1939 in its amphidont hinge structure. From Asymmetricythere

Bassiouni, 1971 it differs in lacking the asymmetry produced by a protruding right valve rib and in

having finer, more numerous marginal pore canals posteriorly. L.hassani Khalifa & Cronin (Rev.

Micropai, 22, 1980), from the Eocene of Egypt, is higher in proportion to the length and wider in

dorsal view. Closest geographically and stratigraphically is Thalmannia cf. fusa (van den Bold) of

Gramann (1975) from the middle Miocene of Burma. Both Gramann's material and our material

differ from Van den Bold's Thalmannia ? fusa from the Miocene of W Africa (Rev. Inst. Franq.

Petrole 21, 1966) in being wider and having convex extremities in dorsal view. The Bangladesh

material is more elongate than the figured Burma specimens. It is not close to other described

species.

Distribution: L. chittagongensis is found in the Inani Anticline in a grey sandstone which varies between 20 and

30 feet in thickness and which represents a brief marine transgression in a predominantly

non-marine sequence. It is associated with a fauna which includes two new species of Costa (see

Stereo-Atlas Ostracod Shells, 13 105-108, 109-112, 1986) and other ostracods indicating a shallow

water shelf environment. The contemporaneous foraminiferal fauna (see Ahmed, Rajshahi Univ.

Stud., 6, 248-166, 1975) is not completely diagnostic but suggests a late Miocene age, although it is

just possible that it may lie on the other side of the boundary in the early Pliocene. Associated

Chlamys, oysters, barnacles, echinoid spines and the abrasion of thick shelled foraminifers all

confirm the suggestion of a shallow open sea environment with appreciable current action and

warm, perhaps even tropical, temperature.

Explanation of Plate 13, 104

Fig. 1, cf RV, ext. lat. (holotype, HU.335.T..17, 1150 /xm long); fig. 2, 9 car., dors. (HU.335.T.20, 1100 /xm long).

Scale A (200 gm; x 84), figs. 1, 2.

Leguminocythereis chittagongensis (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 102

Stereo-Atlas of Ostracod Shells 13, 104

Leguminocythereis chittagongensis (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (23) 105-108 (1986) Costa himchariensis (1 of 4)

595.337.114 (118.2) (549.2 : 161.092.21) : 551.35 + 552.54

ON COSTA HIMCHARIENSIS AHMED sp. nov.

by S. T. Ahmed

(University of Rajshahi, Bangladesh)

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

Remarks:

Costa himchariensis sp. nov.

University of Hull, England, coll. no. HU. 335. T. 8; $ carapace.

[Paratypes: seven specimens mounted as HU. 335. T. 7, 9-14].

Himchari, in the Inani Anticline, south of Cox’s Bazar. Bangladesh; fine, pale-grey sandstone

representing a marine intercalation of probable late Miocene age in predominantly non-marine

sediments.

From Himchari, Bangladesh.

University of Hull, England, coll. nos. HU.335.T.7 (9 RV:P1. 13, 106, fig. 1), HU.335.T.8

(holotype, 9 car.: PI. 13, 106, fig. 2), HU.335.T.10 (cf car.: PI. 13, 108. fig. 2), HU.335.T.12 (9

car.: PI. 13, 108, fig. 1). All from the type locality and horizon.

A species of Costa in which the dorsal, median and ventral ribs develop short transverse muri on

either side. General reticulation is variable being best seen on the posterodorsal area of the males.

There is a short transverse rib from the anterior part of the median rib to the anterior part of the

anterior marginal rib.

This species is placed in Costa Neviani (Mem. Pont. Acc. Sc. Nuovi Lincei, Roma, II, 11, 1928)

although it also has strong affinities with Chrysocythere Ruggieri ( Palaeont . Ital., 56 (N.S.26), 25,

1962) and is, in a sense, intermediate between the two genera. It does, however, lack an eye

tubercle which is present in the type-species of both those genera. It differs from Chrysocythere in

the termination of the median rib which does not join the marginal rib anteriorly and its posterior

Explanation of Plate 13, 106

Fig. 1, 9 RV, int. lat. (HU.335.T.7, 730 /am long); fig. 2, 9 car., It. lat. (holotype, HU.335.T.8, 750 /am long).

Scale A (100 /am; x 128), fig. 1; scale B (100 /am; x 134), fig. 2.

Stereo-Atlas of Ostracod Shells 13, 107 Costa himchariensis (3 of 4)

Remarks (contd.): termination turns down before the posterior margin although the downturn is not so pronounced

as in Costa. Muscle scar pattern and hinge are identical with those in the type-species of the two

genera mentioned although Ruggieri’s original figure shows the frontal scar as two discrete scars

rather than a single hook. It differs from Costa in tapering posteriorly rather less than in most

species as well as in the characters already mentioned. It differs from Haughtonileberis Dingle

(Trans, roy. Soc. S.Afr., 38, 371, 1968) in its marginal spination, crenulate median hinge element

and lack of vestibules. It lacks the fourth rib of Paracosta Siddiqui (Bull. Br. Mus. Nat. Hist. Geol.

suppl. 9, 28, 1971) and Paleocosta Benson (Smithson. Contr. Paleobiol. 35, 35, 1977). Altogether

it agrees reasonably well with the general interpretation of the genus seen in Ruggieri (Boll. Soc.

Pal. Ital. 1, 1961) and Ducasse & Mondain-Monval (Geobios 17, 1984). A characteristic feature of

the Bangladesh material is the absence of an eye tubercle. This may indicate a discrete east

Tethyan development but it is not at present regarded as sufficiently important to separate

formally as a named taxon.

C. himchariensis is not close to any species figured in the literature. It shows most

resemblance to Costa tricostata (Reuss) f. “ normale ” of Ducasse & Mondain-Monval (op.

dr. pi. 1, figs. 1,2) from the Palaeogene of Aquitaine, and Paleocosta aff. mokattamensis (Bassiouni.

1969) of Donze et al. (Bull. Centres Rech. Explor. Elf-Aquitaine 6, pi. 5, figs. 1-5, 1982) from the

Thanetian of Tunisia. Both are widely separated in space and time from the present species.

Distribution: C. himchariensis is found in the Inani anticline grey sandstone which varies between 20 and 30 feet

thick and represents a brief marine transgression in a predominantly non-marine sequence. The

associated foraminiferal fauna is not completely diagnostic but suggests a late Miocene age

although it is just possible that it may lie on the other side of the boundary in the early Pliocene.

Associated Chlamys, oysters, barnacles, echinoid spines and abrasion of the thick shelled

foraminifera suggest a shallow open sea with appreciable current action and warm or perhaps

tropical temperatures.

Explanation of Plate 13, 108

Fig. 1, 9 car., rt. lat. (HU.335.T.12, 750 /an long); fig. 2, C f car., rt. lat. (HU.335.T.10, 800 /an long).

Scale A (100 /Am; x 125), figs. 1, 2.

Stereo-Atlas of Ostracod Shells 13, 106 Costa himchariensis (2 of 4)

Stereo-Atlas of Ostracod Shells 13 (24) 109-112 (1986) Costa obliquifossa (1 of 4)

595.337.114 (118.2) (549.2 : 161.092.21) : 551.35 + 552.54

ON COSTA OBLIQUIFOSSA AHMED sp. nov.

by S. T. Ahmed

(University of Rajshahi, Bangladesh)

Costa obliquifossa sp. nov.

University of Hull, England, coll. no. HU. 335. T. 3; cf carapace.

[Paratypes: five specimens mounted as HU.335.T.1, 2, 4-61],

Himchari, in the Inani Anticline, south of Cox’s Bazar, Bangladesh; fine, pale grey sandstone

representing a marine intercalation of probable late Miocene age in predominantly non-marine

sediments.

Latin; in reference to the oblique, ditch-like structure seen in the antero-median area.

University of Hull, England, coll. nos. HU.335.T.1 ($ RV : PI. 13, 110, fig. 1), HU.335.T.2 ($

car.: PI. 13, 112, fig. 1), HU.335.T.3 (holotype, cf car.: PI. 13, 110, fig. 2), HU.335.T.4. (cf car.:

PI. 13, 112, fig. 2). All from the type locality and horizon.

A species of Costa in which an oblique ditch-like depression develops anteromedianly. This starts

anteroventrally above the lower rib and runs in a posterodorsal direction to the general region of

the adductor muscle scars where it terminates against the median rib.

Explanation of Plate 13, 110

Fig. 1, $ RV, int. lat. HU.335.T.1, 795/j.m long); Fig. 2, cf car., rt. lat. (holotype, HU. 335. T. 3, 860/u.m long).

Scale A (100 /xm; x 121), fig. 1; scale B (100 /u.m; X 112), fig. 2.

Stereo- Atlas of Ostracod Shells 13, 111 Costa obliquifossa (3 of 4)

Remarks: This species is assigned to the genus Costa Neviani, 1928 for reasons similar to those given in the

case of C.himchariensis ( Stereo-Atlas Ostracod Shells 13, 105-108, 1986). It differs clearly from that

species in the valve surface being raised instead of depressed between the median and ventral ribs,

in the more general reticulation and particularly in the reticulation developed anteriorly. It closely

resembles Costa capsella Al-Furaih (Univ. Lib. Univ. Riyadh, 35, pi. 28, fig. 2, 1980), from the

middle Eocene of Saudi Arabia, in many aspects including the fossa, central complex and raised,

rather than depressed area, between the median and ventral rubs. The two species differ in details

of ornamentation but it seems likely that the Bangladesh species is a later derivative of the Eocene

Saudi Arabian one. There is some resemblance to species of Paleocosta such as P.aff. libyaensis

Benson, 1977 of Donze et. al. (Bull. Centres Rech. Explor.-Prod. Elf Aquitaine, 6, pi. 4, figs. 1-3,

1980), from the middle and upper Palaeocene of Tunisia, but C. obliquifossa tapers less posteriorly

in lateral view and differs in details of ornamentation. The comparison serves to emphasise,

however, the approach to Paleocosta in view of the increased ornamentation and incipient

development of further longitudinal ribbing. This is best seen between the ventral rib and ventral

margin which might suggest reference to Paracosta. Nevertheless, the evidence does not seem

sufficiently strong to assign them to either genus.

Distribution: The material came from fine grey sandstone which varies between 20 and 30 feet thick and lies

near the Miocene/Pliocene boundary in a succession of predominantly non-marine deposits. All

the contributory evidence points to a warm, shallow water, marine environment (see Stereo-Atlas

Ostracod Shells 13, 101-104, 105-108, 1986).

Explanation of Plate 13, 112

Fig. 1, $ car., It. lat. (HU.335.T.2, 820 long); fig. 2, cf car. It. lat. (HU.335.T.4, 865 /xm long).

Scale A (100 pirn; x 120), fig. 1; scale B (100 /um; x 112), fig. 2.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

Stereo- Atlas of Ostracod Shells 13, 110 Costa obliquifossa (2 of 4)

Stereo- Atlas of Ostracod Shells 13, 112 Costa obliquifossa (4 of 4)

Stereo- Atlas of Ostracod Shells 13 (25) 113-116 (1986) Nigeroloxoconcha oniseguni (1 of 4)

595.337.14 (116.333.13 + 118.13) (669:161.004.06 + 669:161.005.06) : 552.52

ON NIGEROLOXOCONCHA ONISEGUNI REYMENT

by Richard A. Reyment & Eva R. Reyment

(Department of Historical Geology & Palaeontology, University of Uppsala, Sweden)

Genus NIGEROLOXOCONCHA Reyment, 1963

Type-species (by original designation): Nigeroloxoconcha oniseguni Rement, 1963.

Diagnosis:

Remarks:

Distribution:

Shaped like Loxoconcha, with adont hinge; anterior and posterior-posteroventral vestibules; line

of concrescence and inner margin not parallel in posteroventral sector thus forming a broad cusp.

In lateral view regularly ovate, ellipsoidal in dorsal aspect. Surface concentrically or irregularly

pitted or reticulated in riblet-bound concentrations. Posteroventral surface smooth or lightly

pitted. Margins compressed. Site of eye marked by translucency in shell. Sexual dimorphism

feebly expressed.

Referred by Hartmann (Bronns Klassen und Ordnungen, 5, Arthropods, Abt. 1, Crustacea; 2,

Buch 4; 4, Leiferung: Ostracoda, 761, 1975) to the Loxoconchinae Sars, 1925.

Late Cretaceous - Paleocene; Nigeria, Ghana, USSR?

Explanation of Plate 13, 114

Fig. 1, car., rt. lat., (PMAf988, 490 /am long); fig. 2, juv.-l car., rt. lat. , (PMAf991A, 480 /u.m long); fig. 3. damaged car.. It. lat.,

(PMAf989, 510 Aim long).

Scale A (100 /am; X 140), figs 1,3; scale B (100 /am; x 155), fig. 2.

Stereo- Atlas of Ostracod Shells 13, 115 Nigeroloxoconcha oniseguni (3 of 4)

Nigeroloxoconcha oniseguni Reyment, 1963

1963 Nigeroloxoconcha oniseguni sp. nov. R. Reyment, Stockh.Contr.Geol., 10, 264, pi. 23, figs. 2,3

Holotype:

Type locality:

Geological Department, University of Stockholm, specimen no. GI0 1194, a left valve.

Subsurface of western Nigeria, Araromi borehole, approx, lat. 06°35'N. long. 04°55'E, depth 1470

ft; Araromi Shale, Maastrichtian to early Paleocene.

Figured specimens:

Diagnosis:

Distribution:

Palaeontological Museum. University of Uppsala, Sweden, nos. PMAf988 (car.; PI. 13, 114, fig.

1), PMAf989 (car.: PI. 13, 114, fig. 3), PMAf990 (RV: PI. 13, 116, fig. 1). PMAf991 (car.: PI. 13,

116, fig. 2), PMAf991A (juv.-l car.: PI. 13, 114, fig. 2), PMAf992 (car.: PI. 13, 116, fig. 3).

All from the Araromi Shale, western Nigeria: PMAf988-990 from the Gbekebo borehole (60 km

SE of Araromi), all from a depth of 2385 ft; PMAf991-992 from the Araromi borehole: PMAf991

and PMAf991A from a depth of 1450 ft, PMAf992 from 1470 ft.

Ovoid-rectangular in shape, with sub-caudal process. Elongate fusiform in dorsal aspect; margins

compressed except along the posterodorsal half of the dorsal margin. The lateral surface bulges

irregularly mid-dorsocentrally and mid-centroventrally. Lateral ornament composed of irregular

reticulations grouped in tiers. The ventral and posteroventral areas may be smooth or ornamented

with a finer reticular mesh. There is a broad, translucent ocular zone. Anterior, posterior and

posteroventral vestibules present; inner margin forms a posteroventral cusp. There are about ten

straight marginal pore canals.

Maastrichtian - early Paleocene of West Africa.

Explanation of Plate 13, 116

Fig. 1, RV, int. lat., showing gastropod drill-hole (PMAf990, 525 /am long); fig. 2, car., dors., (PMAf991, 500 /im long); fig. 3, car.,

vent., (PMAf992, 510 /am long).

Scale A (100 gun; x 140), figs 1-3.

Nigeroloxoconcha oniseguni (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 114

Stereo- Atlas of Ostracod Shells 13, 116

Nigeroloxoconcha oniseguni (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (26) 117-120 (1986) Nigeroloxoconcha oyesesei (1 of 4)

595.337.14 (116.333.3 + 118.13) (669.161.005.06 + 669 : 161.004.06) : 552.52

ON NIGEROLOXOCONCHA OYESESEI REYMENT

by Richard A. Reyment & Eva R. Reyment

(Department of Historical Geology and Palaeontology, University of Uppsala, Sweden

Nigeroloxoconcha oyesesei Reyment, 1963

1963 Nigeroloxoconcha oyesesei sp. nov. R. Reyment, Stockh.Contr.Geol., 10, 265, pi. 7, figs. 9a-b, pi. 8, fig. 6.

Holotype:

Type locality:

Figured specimens:

Geological Department, University of Stockholm, specimen no. GIO 1138; a carapace.

Subsurface of western Nigeria, Gbekebo borehole, approx, lat. 06°20'N, long. 05° 30'E, depth

2399 ft; Araromi Shale, Maastrichtian to early Paleocene.

Palaeontological Museum, University of Uppsala, Sweden, nos. PMAf993 (car.: PI. 13, 118, fig.

1), PMAf994 (LV:P1. 13, 118, fig. 2), PMAf995 (car.: PI. 13, 118, fig. 3), PMAf996 (LV:P1. 13, 120,

fig. 1), PMAf997 (car.:Pl. 13, 120, fig. 2), PMA1998 (RV:P1. 13, 120, fig. 3).

All from the Araromi Shale, western Nigeria: PMAf996 is from the Araromi borehole (approx,

lat. 06°35'N, long. 04°55'E) at a depth of 1108 ft; the remainder are from the Gbekebo borehole at

depths of 2347 ft (PMAf998), 2399 ft. (PMAf994 and PMAf997) and 2564 ft. (PMAf993 and

PMA1995).

Explanation of Plate 13, 118

Fig. 1, car., It. lat., (PMAf993, 515 gm long); fig. 2, LV, int. lat., detail of posterior showing cusped inner margin (PMAf994); fig. 3,

car., oblique vent., (PMAf995, 500 /xm long).

Scale A (100 /am; X 140), figs. 1,3; scale B (100 /am; x 175), fig. 2.

Stereo- Atlas of Ostracod Shells 13, 1 19 Nigeroloxoconcha oyesesei (3 of 4)

Diagnosis: Ovoid, margins compressed and rimmed, except for posterodorsal stretch. Dorsal margin straight,

ventral margin slightly concave. Subhexagonal in dorsal aspect. Inner margin and line of

concrescence do not coincide and there are anterior and posterior-posteroventral vestibules;

cusped posteroventral incursion of inner margin and line of concrescence. Lateral ornament

consists of reticulations or pits grouped within concentric and vertically aligned riblets. Ventral

and posteroventral surfaces smooth.

Distribution: Maastrichtian - early Paleocene of western Nigeria.

Explanation of Plate 13, 120

Fig. 1, LV, int. lat., (PMAf996, 515 /xm long); fig. 2, car., dors., (PMAf997, 510 /urn long); fig. 3, damaged RV, ext. lat. showing

impression of right hinge element in shale (PMAf998, 530 /urn long).

Scale A (100 /urn; x 140), figs 1-3.

Stereo-Atlas of Ostracod Shells 13, 1 18

Nigeroloxoconcha oyesesei (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 120

Nigeroloxoconcha oyesesei (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (27) 121-128 (1986) Togoina attitogonensis ( 1 of 8)

595.337.14 (118.14) (669 : 161.001.06 + 669 : 161.003.06) : 551.351

ON TOGOINA ATTITOGONENSIS APOSTOLESCU

by R. A. Reyment, E. R. Reyment & S. Majoran

( Department of Historical Geology & Palaeontology,

University of Uppsala, Sweden)

Genus TOGOINA Apostolescu, 1961

Type-species (by original designation): Togoina attitogonensis Apostolescu, 1961.

Diagnosis: Subovoidal, strongly inflated, massive carapace with unequally ornamented valves. Anterior

margin broadly and eccentrically rounded, posterior subangular to truncated with short caudal

process in right valve (only vaguely suggested in left valve). The left valve is larger than the right

and overlaps or overhangs the latter around almost the entire margin; the ventral surface of the left

valve bears four to five riblets. The anterior and posterior margins may bear a few denticles. The

anterior inner margin and line of concrescence do not coincide, thus forming a vestibule; a shallow

posterior vestibule may occur. There is usually a broad sulcus beneath the flat, elongated, ovoid

eye-tubercle. The eye-socket is broad. Hinge heterodont. The anterior marginal pore canals are

simple, straight to sinuous; the posterior pore canals are mostly sinuous, usually simple but

occasionally bifurcated or grouped in bundles. The muscle field consists of four vertically aligned

adductor scars and a rounded anterior spot. Sexual dimorphism strong, with males longer and with

their maximum width nearer mid-length than in females; females inflated posteriorly. Late instars

are smooth to feebly pitted in the median area; the final larval stage is ornamented.

Explanation of Plate 13, 122

Fig. 1, cf car., rt.lat., mainly smooth morph with median pitting (PMAfll4, 885 /xm long); fig. 2, juv. -1 car., vent., subreticulate

morph (PMAfll5, 760 /xm long); fig. 3, $ car., lt.lat. , largely smooth morph (PMAfll6, 810 /xm long).

Scale A (200 /x m; x 80), figs. 1-3.

Stereo-Atlas of Ostracod Shells 13, 123 Togoina attitogonensis (3 of 8)

Remarks: Togoina is highly polymorphic with respect to shape and ornament. Shape polymorphism is

manifested mainly in the posterior outline. Ornamental polymorphism is developed as smooth,

almost smooth, punctate, subreticulate and costate variants. More than one ornamental variant

can occur in the same population, hence these are not ecophenotypic; shape polymorphism may,

however, be environmentally controlled. Togoina resembles Leguminocythereis in many respects,

but its polymorphic pattern is quite different from what pertains in that genus.

Distribution: Lower Eocene of the Gulf of Guinea (Nigeria, Benin, Togo, Cameroun?) and Argentina.

Togoina attitogonensis Apostolescu, 1961

1961 Togoina attitogonensis n.g. n.sp., V. Apostolescu, Revue Inst. fr. Petrole, 16, 811, pi. 9, figs. 163-166, pi. 18, figs. 320-322.

1961 Togoina obesa sp. nov., V. Apostolescu, ibid., 812, pi. 9, figs. 167-171.

1963 Togoina attitogonensis Apostolescu; R. Reyment, Stockh.Contr.Geol., 10, 97, pi. 2, fig. 2, pi. 10, figs. 4-7, text-figs. 80-7, 8.

1963 Togoina obesa Apostolescu; R. Reyment, ibid., 99, pi. 8, figs, la-b, pi. 21, figs. 3-11, pi. 22, fig. 1, text-figs. 80-9, 10.

Holotype: Institut franqais du Petrole, Paris, no. H154; a carapace.

Type locality: Subsurface of the Republic of Togo, Gulf of Guinea, West Africa, borehole at Attitogon, approx,

lat. 06° 12'N, long. 01° 36'E, at a depth of 131 m; Eocene.

Figured specimens: Palaeontological Museum, University of Uppsala, Sweden, nos. PMAfll4 (cf car.: PI. 13, 122, fig.

1), PMAfllS (juv. - 1 car.: PI. 13, 122, fig. 2), PMAfll6 (9 car.: PI. 13, 122, fig. 3). PMAH77 (9?

RV:P1. 13, 124, fig. 1), PMAfll8 (9 car.: PI. 13, 124, fig. 2), PMAfll9 (9 car.: PI. 13, 124, fig. 3),

PMAfl20 (9 car.: PI. 13, 126, fig. 1), PMAfl21 (9 LV:P1. 13, 126 fig. 2), PMAH22 (9? car.: PI.

13, 126, fig. 3), PMAfl23 (9 RV:P1. 13, 128, fig. 1), PM AH 24 (juv. -1 car.: PL. 13, 128, fig. 2),

PMAfl25 (Cf car.: PI. 13, 128, fig. 3).

All from the Ameki Formation, Lower Eocene, of Nigeria. PMAfll4-119 are from

105-108m depth in the Iju borehole; PMAfl23 and 125 are from 37-43m depth in the Iju borehole;

PMAfll5, 121, 122 and 124 are from 146-150m depth in the Otta borehole. The Otta and Iju

boreholes were drilled by the Public Works Department, Lagos, Nigeria in 1935 and 1936.

Explanation of Plate 13, 124

Fig. 1, 9? RV, int. lat., showing hinge (PMAfll7, 810 /xm long); fig. 2, 9 car., vent., pitted morph (PMAfll8, 720 /xm long); fig. 3, 9

car., dors., pitted morph (PMAfll9, 820 /xm long). Scale A (200 /xm; x 80), figs. 1, 3; scale B (200 /xm; x 95), fig. 2.

Stereo-Atlas of Ostracod Shells 13, 122

Togoina attitogonensis (2 of 8)

Stereo-Atlas of Ostracod Shells 13, 124

Togoina attitogonensis (4 of 8)

Stereo-Atlas of Ostracod Shells 13, 125

Togoina attitogonensis (5 of 8)

Diagnosis:

Remarks:

Distribution:

Highly polymorphic in ornamentation (reticulate, smooth (retention of larval characteristics) or

punctate) and shape of posterior. Anterior and posterior denticulation variable. Hinge heterodont

with vaguely lobate posterior tooth and variable bifid anterior tooth in right valve. Larval stages

smooth or displaying phantom ornamentation.

This form was originally erected as two species, albeit doubtfully, by Apostolescu (1961, op.cit.), a

separation that can no longer be maintained in the light of what is known of polymorphism in some

groups of ostracods. The pattern of morphs displayed by Togoina matches what is found in related

genera.

Lower Eocene of the Gulf of Guinea (Togo, Benin, Nigeria).

Explanation of Plate 13, 126

Fig. 1, cf car., rt.lat., pitted morph (PMAfl20, 860 /urn long); fig. 2, 9 LV. int.lat.. detail of hinge (PMAfl21, 660 /urn long); fig. 3, 9?

car., rt.lat., subreticulate morph (PMAfl22, 890 /urn long).

Scale A (200 /urn; x 80), figs. 1, 3; scale B (200 /urn; x 120), fig. 2.

Stereo-Atlas of Ostracod Shells 13, 127 Togoina attitogonensis (7 of 8)

Text-fig. 1. Togoina attitogonensis. a, anterior marginal pore canals of RV; b, posterior marginal pore canals. Drawings

made from photographs in transmitted light.

Explanation of Plate 13, 128

Fig. 1, 9 RV, int.lat., detail of anterior hinge element (PMAfl23); fig. 2, juv. -1 car., dors., subreticulate morph (PMAfl24, 820 /urn

long); fig. 3, cf car., lt.lat., finely punctate morph (PMAfl25, 950 /um long).

Scale A (50 /um; x 250), fig. 1; scale B (200 /um; x 75), figs. 2, 3.

Stereo-Atlas of Ostracod Shells 13, 126

Togoina attitogonensis (6 of 8)

Stereo-Atlas of Ostracod Shells 13, 128

Togoina attitogonensis (8 of 8)

Stereo-Atlas of Ostracod Shells 13 (28) 129-132 (1986) Iberocypris cornutus ( 1 of 4)

595.337.12 (116.333.3) (460:162.002.40) : 551.312 + 552.51

ON IBEROCYPRIS CORNUTUS BABINOT

by J. F. Babinot

(Universite de Provence, Centre Saint-Charles-Marseille, France)

Genus IBEROCYPRIS Babinot, 1985

Type-species (by original designation): Iberocypris cornutus Babinot, 1985.

Diagnosis: Carapace trapezoid-shaped in lateral view; left valve strongly overlapping the right, particularly by

a supradorsal structure: a median denticulate rim with horn-like protrusions at the anterior and

posterior ends; prominent ventral ridge. Right valve smaller and narrower, lacking dorsal

protrusions. Ornamentation: mostly smooth but partly reticulate and/or ribbed in the medioven-

tral area of the valves. Hinge adont. Central muscle scars: 5 subcircular scars, as in the

Candonidae. Marginal pore canals straight, very narrow, about 20 at the anterior margin.

Remarks: This genus shows several distinctive features such as the crenulate-rimmed supradorsal margin of

the left valve with distal horns and a strong valve dimorphism. However, in some respects it is

similar to some freshwater inequivalved genera such as Limnocypridea Ljubimova, 1956,

Cyprideamorphella Mandelstam, 1956, Turkmenella Schneider, 1963, Ilyocyprimorpha Mande-

lstam, 1956 ... all of which are from the Cretaceous of the U.S.S.R.

Explanation of Plate 13, 130

Fig. 1, cf LV, int. lat. (holotype, HBR 2, 800 pm long); fig. 2, LV int. lat., dorsal part (PBR 2/6, length unknown); fig. 3. cf LV. ext.

lat. (PBR 2/10, 850 pm long); fig. 4, LV int. lat., central muscle scars (PBR 2/1).

Scale A (200 ju,m; x 64), figs. 1-3; scale B (200 pm\ x 396), fig. 4.

Stereo-Atlas of Ostracod Shells, 13, 131 Iberocypris cornutus (3 of 4)

Iberocypris cornutus Babinot, 1985

1985 Iberocypris cornutus n.gen., n.sp., J.F. Babinot, Rev. Micropal., 27,4, pl.l, figs. 1-8, pi. 2, figs. 1-9.

Holotype:

Type locality:

Figured specimens:

Diagnosis:

Distribution:

Coll, of Universite de Provence, Centre Saint-Charles, Laboratoire de Stratigraphie et de

Paleoecologie, no. HBR2; cf LV.

South Fontfria, 10 kms NW of Segura de Los Banos, Teruel, Spain; approx, lat. 40°55'N, long.

1°10'W. Maastrichtian, Cretaceous. In reddish sands and lutites with charophytes.

Universite de Provence, Centre Saint-Charles, nos. HBR 2 (holotype, cf LV: PI. 13, 130, fig. 1),

PBR 2/6 (LV: PI. 13, 130, fig. 2), PBR 2/10 (cf LV: PI. 13, 130, fig. 3). PBR 2/1 (LV: PI. 13, 130,

fig. 4), PBR 2/14 (cf LV: PI. 13, 132, fig. 1), PBR 2/19 (cf car. PI. 13, 132, fig. 2), PBR 2/7 (9 RV:

PI. 13, 132, fig. 3), PBR 2/8 (9 car.: PI. 13, 132, fig. 4).

All of the specimens were collected by Dr. E. Moissenet (Universite Paris I) and all come from

Fontfria, Teruel, Spain.

As for the genus. Iberocypris is currently monotypic.

Only known from freshwater deposits in the Maastrichtian of east-central Spain.

Explanation of Plate 13, 132

Fig. 1, cf LV, int. lat. (PBR 2/14, 880 /am long); fig. 2, cf car. ext. obi. vent. (PBR 2/19, 870 /am long); fig. 3, $ RV dors. (PBR 2/7,

820 pm long); fig. 4,, 9 car., ext. h. lat. (PBR 2/8, 830 ^tn long).

Scale A (200 /u.m; X 64), figs. 1-4.

Iberocypris cornutus (2 of 4)

Stereo-Atlas of Ostracod Shells 13, 130

Stereo-Atlas of Ostracod Shells 13, 132

Iberocypris cornutus (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (29) 133-136 (1986) Parapokornyella taxyae (1 of 4)

595.337.14 (116.331) (44 : 161.003.47) : 551.351 + 552.54

ON PARAPOKORNYELLA TAXYAE (BABINOT)

by J. F. Babinot

(Universite de Provence, Centre Saint-Charles-Marseille, France)

Genus PARAPOKORNYELLA Babinot, 1980

Type-species (by original designation): Opimocythere taxyae Babinot, 1970.

Diagnosis: Carapace strongly swollen with prominent lateroventral area underlined by a medioventral rib. Left valve

overlapping right, particularly at cardinal angles, with margin extending anteriorly in a frontal hinge ear.

Ornament: reticulate or partly reticulate, especially medially. In ventral view, carapace arrow-shaped, with

sinuous ribbing (elevated muri of the reticulum). Hinge amphidont. Marginal zones large, without vestibula;

marginal pore canals sinuous, not abundant.

Remarks: This genus probably belongs to the Hemicytherinae. Parapokornyella differs from Pokornyella Oertli, 1956

by the following: carapace more rectangular in lateral view, dorsal margin nearly straight or slightly convex;

posterior end larger with pronounced cardinal ear on the left valve only; hinge teeth more or less denticulate.

The Tertiary genus Aurila Pokorny, 1955 does not have the dimorphism of Parapokornyella ; the shape is

tapered (rather than arrow-shaped) in dorsal and ventral views; the same general trends appear in the

subgenera of Aurila erected by G. Ruggieri {Boll. Soc. Pal. Ital., 14, 1, 27-46, 1975). Opimocythere Hazel,

1968 differs by its ventral shape, brachycytherid type of hinge, its numerous marginal pore canals and,

moreover, by a circular pit which cuts the selvage at the posterior end. Parapokornyella is a possible ancestor

of the Cenozoic genus Pokornyella (occurring more abundantly in marine Paleogene deposits); the Aurila

group (Neogene) may also be phylogenetically linked to these genera. Parapokornyella contains: P. taxyae

(Babinot, 1970) (Cenomanian); P. triangulata Babinot, 1980 (uppermost Turonian-Santonian); and P.

decorata Babinot, 1980 (Santonian).

Explanation of Plate 13, 134

Fig. 1, car. ext. lat. (PCE 3/5, 720 pm long); fig. 2, car. vent. (PCE 3/10, 690 /am long); fig. 3, car. ext. lat. (PCE 3/11, 660 /am long);

fig. 4, car. dors. (PCE 3/12, 630 /am long). Scale A (200 /am; x 87), figs. 1-4.

Stereo- Atlas of Ostracod Shells 13, 135 Parapokornyella taxyae (3 of 4)

Parapokornyella taxyae (Babinot, 1970)

1970 Opimocythere taxyae n.sp., J.F. Babinot, Rev. Micropal., 13, 2, 98-99, pi . 1 , figs. 9-11, pi. 2, figs. 12-13.

1973 Opimocythere taxyae Babinot; J.P. Colin, These Univ. Paris VI, 167, pi. 16, figs. 4a-b.

1978 Opimocythere taxyae Babinot; B. Andreu, These Univ. Toulouse, 258, pi. 33, figs. 11-12.

1978 Opimocythere taxyae Babinot; J.F. Babinot, J.P. Colin, R. Damotte, & P. Donze, Geologie Mediterraneenne, 5, 1, 22.

1980 P. taxyae (Babinot); J.F. Babinot, Trav. Lab. Geol. hist. Pal. Univ. Provence, 10, 207-209, pi. 41, figs. 1-7, pi. 42, figs. 1-3.

1985 Parapokornyella taxyae (Babinot); J.F. Babinot, J.P. Colin, & R. Damotte, in: H.J. Oertli (Ed.), Ostracodes de France,

Bull. Centres Rech. Explor.-Prod. Elf -Aquitaine, Mem., 9, 218, pi. 67, figs. 8-11.

Holotype:

Type locality:

Figured specimens:

Diagnosis:

Distribution:

Univ. de Provence, Marseille, Lab. de Strat. et de Paleoecologie, no. HCE 3; carapace.

La Begude, 3 kms SW of Le Camp-du-Castellet, Var, France; approx, lat. 47° 55'N., long. 3° 45’E. Late

Cenomanian, Cretaceous. In marly limestones with oysters and benthic forminifera.

Univ. de Provence, paratypes PCE 3/5 (car.: PI. 13, 134, fig. 1), PCE 3/10 :car.: PI. 13, 134, fig. 2), PCE 3/11

(car.: PI. 13, 134, fig. 3), PCE 3/12 (car.: PI. 13, 134, fig. 4), PCE 3/13 (RV:P1. 13, 136, figs. 1,3), PCE 3/14

(RV:P1. 13, 136, fig. 2), PCE 3/15 (car.: PI. 13, 136, fig. 4).

All from the type-locality.

Parapokornyella with strong median reticulation with thick tegmen, ventral ridge with 2 carinae posteriorly;

eye tubercle low, on a transverse frontal lobe adjacent to a posterior depression; anterior margin depressed

with 5-6 low muri; posterior end strongly depressed, smooth or slightly pitted; dorsal rim and subcentral

tubercle scarce or absent. Muri appear as more sinuous ribblets on ventral area. Hinge slightly paramphidont.

Right valve with anterior tooth well developed, more or less incised; more elongate posterior tooth fanning

out upwards; subdivided into 2-4 elements; anterior adjacent socket large, rounded.

Only known in shallow water deposits. In Provence, SE France, especially in the internal part of carbonate

platforms: more accurately, in the internal-median part of inner sheltered platforms, as shown by J.F.

Babinot & J.P. Colin (in: R.F. Maddocks (Ed.), Applications of Ostracoda, 195, fig. 6, 1983, Univ. Houston,

Texas).

Known from Provence, S France (middle to late Cenomanian); Dordogne, Charentes and Landes in the

Aquitaine Basin (middle to late Cenomanian); and from the late Cenomanian of Sierra de Montsech,

Aragon, Spain.

Explanation of Plate 13, 136

Fig. 1, RV, int. lat., ant. tooth (PCE 3/13); fig. 2, RV int. lat. (PCE 3/14, 640 fim long); fig. 3, RV int. lat. (PCE 3/13, 690 pm long);

fig. 4, car. ext. lat. (PCE 3/15, 710 pm long). Scale A (120 /rm; x 490), fig. 1; scale B (200 pm\ x 87), figs. 2-4.

Stereo-Atlas of Ostracod Shells 13, 134

Parapokornyella taxyae (2 of 4)

Stereo- Atlas of Ostracod Shells 13, 136

Parapokornyella taxyae (4 of 4)

Stereo-Atlas of Ostracod Shells 13 (30) 137-144 (1986) Paracandona occitanica ( 1 of 8)

595.337.12 (116.333.3) (44 : 161.000.43) : 551.312/551.313.1

ON PARACANDONA OCCITANICA BABINOT & TAMBAREAU sp. nov.

by J. F. Babinot & Y. Tambareau

(Universite de Provence, Centre Saint-Charles-Marseille & Universite Paul Sabatier, Toulouse, France)

Paracandona occitanica sp. nov.

1980 Paracandona sp.l; J.F. Babinot, Trav. Lab. Geol. hist. Pal. Univ. Provence, 10, pi. 50, figs 5-7.

1983 Paracandona sp.l; J.F. Babinot, M. Bilotte, Y. Tambareau & J. Villatte, Geologie mediterraneenne, 10. 3-4, 273, pl.l, figs.

4,5.

1985 Paracandona sp.l; J. F. Babinot, J.P. Colin & R. Damotte, in: H.J. Oertli (Ed.), Ostracodes de France, Bull. Centres Rech.

Explor.-Prod. Elf -Aquitaine, Mem. 9, 255, pi. 70, figs. 6,7

Holotype:

Type locality:

Deviation of name:

Figured specimens:

Universite de Provence, Centre Saint-Charles, Marseille, Laboratoire de Stratigraphie et de

Paleoecologie, no. HBR3; carapace (coll. Y. Tambareau).

North Peyrecave, roadside 800m before Casse, Haute-Garonne, France; lat. 43°12' 50"N, long.

0°55'17"E. “Marnes d’Auzas” Formation; in brackish/freshwater paleoenvironments (see below).

Upper Maastrichtian, Cretaceous.

From Occitania; mediaeval name of ‘Langue d’oc’ speaking region.

Universite de Provence, Centre Saint-Charles, Marseille, nos. HBR3 (holotype, carapace; PI. 13.

138, figs. 1-3), BRPyl (LV:P1. 13, 140, figs. 1,2), PBR3/1 (paratype, LV:P1. 13, 140, fig. 3) PBR3/2

(paratype, car.: PI. 13, 142, figs. 1-3), PBR3/3 (paratype, LV:P1. 13, 142, fig. 4), BR3Prl (car.: PI.

13, 144, fig. 1), BR3Pr2 (car.: PI. 13, 144, fig. 2), BR3Py2 (RV:P1. 13, 144, fig. 3)

The holotype and paratypes are from Peyrecave, the type locality. Specimens PBRPyl-2 are

from Auzas, Haute-Garonne; BRPrl is from Les Baux, Alpilles, Bouches-du-Rhone, France;

BRPr2 is from Velaux, 3 km N of Rognac, Bouches-du-Rhone. Localities at Peyrecave and Auzas

are upper Maastrichtian; Les Baux and Velaux are in the lower Maastrichtian (Begudian).

Explanation of Plate 13, 138

Figs. 1-3, car. (holotype, HBR3, 1163 pm long): fig. 1, vent.; fig. 2, vent, details; fig. 3, vent, ornament.

Scale A (200 pm; x 49), fig. 1; scale B (100 pm; x 87), fig. 2; scale C (50 pm; x 261), fig. 3.

Stereo-Atlas of Ostracod Shells, 13, 139 Paracandona occitanica (3 of 8)

Diagnosis: Large (up to 1mm long) species of Paracandona Hartwig; strongly inflated. Anterior and posterior

margins well rounded with subequal convexity; dorsal margin generally arched but straighter in the

posterior half of the left valve. Ventral area depressed with a post-median concavity. In dorsal

view, carapace very wide (width: half the length) with left valve overlapping the right, especially

posteriorly (ear-like expansion). Strongly marked ornament: lace-like, consisting of a first-order

reticulation with polygonal fossae (diameter about 20-30 pm), and smooth spines (papillae) above

the carapace surface; spines show a sub-central pore, are not conjunctive or disjunctive, and

always occur within the solum of a fossa. Distance between spines seems to be variable between

specimens; no spines along the ventral margin. Hinge adont. Marginal zones larger in anterior and

postero-ventral areas than in the upper posterior part; pore canals and vestibulum not seen.

Subcentral muscle scars (observed in a single fragmented right valve) probably five scars (three in

front, two behind) more or less oblique and elongate.

Remarks: This species has previously been placed within the genus Paracandona, an assignment which takes

into account external features such as size, shape and type ornament. Its hinge and muscle scars

are typical of the Candonidae.

Peyrecave, the type locality of Paracandona occitanica, is located in the Aurignac anticline (see

Text-fig. 1), and in the “Marnes d'Auzas” Formation. This deposit lies below the “Calcaire

Nankin'’ containing Orbitoides media (d'Archiac), O. apiculata Schlumberger, Hellenocyclina

beotica Reichel, and Nummofallotia cretacea Schlumberger. The “Marnes d’'Auzas” are

considered to be one of the last lithologic units of the upper Maastrichtian. Specimens occur

predominantly over a 15m thickness (in the middle-upper part) and into grey marls with

charophytes; the base and top show a freshwater trend with Frambocythere tumiensis ferreri Colin,

Cypris sp. of Babinot, Neocyprideis sp., freshwater gastropods ( Islamia gr. indecisa Cossmann)

and charophytes such as Platychara compressa (Knowlton) Grambast, Amblyochara begudiana

Grambast, Peckichara sertulata Grambast, and Porochara sp. The middle part contains more

brackish associations with species of Limburgina, Perissocytheridea, Cytheromorpha and benthic

foraminifers (Laffiteina mengaudi (Astre) and oysters (Ostrea garumnica Coquand). These

Explanation of Plate 13, 140

Fig. 1,2, LV (BRPyl, 1122 /urn long): fig. 1, ext. lat. ornament; fig. 2, ext. lat. Fig. 3, LV int. lat. (PBR3/1, 1204 gm long).

Scale A (100 pm; x 335), fig. 1; scale B (200 pm; x 49), figs. 2,3.

Stereo- Atlas of Ostracod Shells 13, 138 Paracandona occitanica (2 of 8)

Stereo-Atlas of Ostracod Shells 13, 141 Paracandona occitanica (5 of 8)

Remarks (contd.): associations probably best approximate to marginal environments such as lagoons or marshes with

at times increasing or decreasing salinity. Mixed assemblages occur when temporary oligohaline

waters flood down into the marine biotopes. Paracandona occitanica is, accordingly, considered to

be an oligohaline species.

Distribution: P. occitanica is known from areas of southern France and northern Spain.

1. Petites Pyrenees:

Peyrecave (see above): “Marnes d’Auzas” Formation, upper Maastrichtian.

Auzas: ‘type locality1 of the “Marnes d’Auzas” Formation, in the Saint-Martory anticline); with

Frambocythere tumiensis ferreri Colin, Neocyprideis sp. and charophytes (Septorella ultima

Grambast, Peckichara sertulata Grambast, Microchara cristata Grambast).

Pentecote: near Ausseing, type locality of the Garumnian (A. Leymerie, Bull. Soc. geol. France,

2, 19, 1091-1096, 1862); with Frambocythere tumiensis ferreri Colin, Paracandona krsticae

Babinot, Neocyprideis sp. and charophytes (M. Massieux et al., Geobios , 12, 6, 899-905, 1979).

Paillon : 5km E of Auzas; with Paracandona krsticae Babinot, Neocyprideis sp. and charophytes.

2. Provence:

Les Baux, Alpilles Mountains; lower Maastrichtian (Begudian).

Velaux: 4km NW of Rognac, in blue-grey marls with charophytes; lower Maastrichtian

(Begudian).

Saint-Esteve-Janson: near the Durance River (sample C930; coll. M. Feist, Montpellier); upper

Maastrichtian (Rognacian).

Rognac-Vitrolles: type section of Rognacian (upper Maastrichtian): rare, in grey marls with

Frambocythere tumiensis ferreri Colin, freshwater gastropods: Hantkenia armata (Matheron),

species of Lychnus and charophytes.

Rousset s/Arc : N Aix-en-Provence syncline: same deposits as above (rare).

Roques Hautes, near Rousset (sample C1034, coll. Grambast, Montpellier); upper Maastrichtian

(Rognacian).

Explanation of Plate 13, 142

Figs. 1-3, juv. car. (PBR3/2, 938 pun long): fig. 1, dors. post, end; fig. 2, dors, ant.; fig. 3, dors. Fig, 4, juv. LV, ext. lat. (PBR3/3. 1030

/xm long).

Scale A (100 /jure, x 189), figs. 1,2; scale B (200 /xm; X 49), figs. 3,4.

Stereo-Atlas of Ostracod Shells 13, 143 Paracandona occitanica (7 of 8)

Distribution (cont.): 3. Languedoc: Maastrichtian and probably Fuvelian (upper Campanian). Villeveyrac area,

Elerault, France : Le Peyrou and Le Pas de Vidal (J.F. Babinot, P. Freytet et al., Geologie

mediterraneenne, 10, 3-4, 257, 1983); Les Triques (sample C756, coll. M. Feist, Montpellier).

4. Catalonia: Maastrichtian. Vallcebre, N Berga; with Frambocythere tumiensis (Helmdach) (coll.

Y. Tambareau).

Text-fig. 1.

Areas of occurrence of P. occitanica. The type locality, in the Petites Pyrenees area, is arrowed.

Explanation of Plate 13, 144

Fig. 1, car. ext. lat. (BR3Prl, 1347 /urn long); fig. 2, car. dors. (BR3Pr2, 1333 /j.m long); fig. 3, RV int. lat., muscle scars (BR3Py2,

broken).

Scale A (200 /xm; x 49), fig. 1; scale B (200 u- m; X 45), fig. 2; scale C (50 fim; x 198), fig. 3.

Stereo-Atlas of Ostracod Shells 13, 144 Paracandona occitanica (8 of 8)

Stereo-Atlas of Ostracod Shells 13 (31) 145-148 (1986) Bolbihithis abdominalis (1 of 4)

595.336.13 (113.313) (430.1 : 161.008.54) : 551.35 + 552.55

ON BOLBIHITHIS ABDOMINALIS SCHALLREUTER

by Roger E. L. Schallreuter

(University of Hamburg, German Federal Republic)

Bolbihithis abdominalis Schallreuter, 1981

1981 Bolbihithis abdominalis n.sp. R.E.L. Schallreuter, Geol. For. Stockh. Forh., 103 (1), 61, 63-64, fig. 1.

1984 Bolbihithis abdominalis Schallreuter, 1981; R.E.L. Schallreuter, Neus. Jb. Geol. Palaont. Abh., 169 (1), 13.

1985 Bolbihithis abdominalis Schallreuter, 1981; R.E.L. Schallreuter, Mitt. Geol. -Palaont. Inst. Univ. Hamburg, 59, 106.

1986 Bolbihithis abdominalis Schallreuter, 1981; R.E.L. Schallreuter, Ostrakoden aus Ojlemyrflint-Geschieben von Sylt, preprint

from U.v. Hacht, Fossilien von Sytt 2, pi. 3, fig. 11.

Holotype: Geologisch-Palaontologisches Institut und Museum, University of Hamburg (GPIMH) no. 2139.

tecnomorphic RV, anteriorly and dorsally incomplete (Schallreuter 1981, op. cit., fig. 1).

Type locality: Gravel pits in the Keitumer Heide between Braderup and Munkmarsch, Isle of Sylt, N Frisian Is,

Germany; 54° 56'N, 8° 21 'E. Upper Ordovician Ojlemyrflint erratic boulder (no. Sy35 of

Schallreuter collection) of the upper Kaolinsand (lower Pleistocene).

Explanation of Plate 13, 146

Figs. 1-3, $ RV (GPIMH 3433, 1026 /xm long): fig. 1, ext. lat . ; fig. 2, ext. vent.; fig. 3. int. lat. ; fig. 4, juv. LV, ext. lat. (GPIMH 3434.

591 gm long).

Scale A (100 /xm

x 85), fig. 1; scale B (100 /xm) x 60), fig. 2; scale C (100 /xm; x 65), fig. 3; scale D (100 /xm; x 90), fig. 4.

Stereo-Atlas of Ostracod Shells, 13, 147

Bolbihithis abdominalis (3 of 4)

Figured specimens:

Diagnosis

Remarks:

Distribution:

GPIMH nos. 3433 ($ RV:P1. 13, 146, figs. 1-3), 3434 (juv. LV:P1. 13, 146, fig. 4), 3435 (juv.

RV:P1. 13, 148, fig. 1) and 3436 (cf RV:P1. 13, 148, fig. 2). All from upper Ordovician

Ojlemyrflint erratic boulders of the upper Kaolinsand (lower Pleistocene) near Braderup, Isle of

Sylt (no. 3433 from Schallreuter collection no. Syl87, 3434 from Sy212, 3435 from Sy253 and 3436

from Sy 1 15) . Boulders collected by Ulrich von Hacht, Hamburg.

Females 1,00-1, 06mm long. Posteroventral lobe rather broad, in tecnomorphs extends posteriorly

to the middle of the posterior field, in females it occupies the whole field. Spine of the

posteroventral lobe weak in adults, and relatively larger the smaller the larvae. Velar flange

narrow in tecnomorphs, in females moderately broad and weakly convex. Surface reticulate.

The middle Ordovician type-species of Bolbihithis Schallreuter, 1967, Bichilina prima Sarv, 1959,

is of the same size and exhibits the same kind of velar (antral) dimorphism [R.E.L. Schallreuter,

Palaeontographica (A), 144 (1/3), 71-72, pi. 24, figs. 5-11, 1973] but B. abdominalis is clearly

distinguished by the dimorphism of its posteroventral lobe. This kind of domiciliar dimorphism

also occurs in Bolbina (for example, in B. major) and was therefore called ‘bolbinid domiciliar

dimorphism’ (R.E.L. Schallreuter 1985, op. cit., 106; Trudy Palaont. Inst., 172, 111, 1979).

Known only from erratic boulders. Found in uppermost Ordovician Ojlemyrflint erratic boulders

from the Isle of Gotland (Baltic Sea), the Isle of Sylt (N Sea) and the westernmost part of

Niedersachen (Wielen), and from an upper Ordovician erratic limestone boulder (no. 85/191)

from Ahlintel, Westphalia.

Explanation of Plate 13, 148

Fig. 1, juv. RV, ext. lat. (GPIMH 3435, 688 /xm long excluding spines); fig. 2, anterodorsally incomplete cf RV, ext. lat. (GPIMH

3436, 914 /xm long).

Scale A (100 /xm; x 130), fig. 1; scale B (100 /xm; x 100), fig. 2.

Stereo-Atlas of Ostracod Shells 13, 148

Bolbihithis abdominalis (4 of 4)

Stereo-Atlas of Ostracod Shells 13, 146

Bolbihithis abdominalis (2 of 4)

Stereo-Atlas of Ostracod Shells 13 (32) 149-151 (1986)

Index, Volume 13, 1986 (1 of 3)

General Index

abdominalis, Bolbihithis; 145-148

Ahmed, S. T., On Costa himchariensis Ahmed sp. nov.; 105-108

Ahmed, S. T., On Costa obliquifossa Ahmed sp. nov.; 109-112

Ahmed, S. T. & Neale, J. W., On Leguminocythereis chittagongensis Neale & Ahmed sp. nov.; 101-104

Ambostracon costaforma Whatley & Maybury sp. nov.; 81-84

Ambostracon delicata Wliatley & Maybury sp. nov.; 85-88

Ambostracon europea Maybury & Whatley sp. nov.; 77-80

Ambostracon perfecta Maybury & Whatley sp. nov. ; 89-92

argus, Eucy there', 71-76

attitogonensis, Togoina; 121-128

Aurila woutersi Horne sp. nov.; 33-38

Babinot, J. F., On Iberocypris cornutus Babinot; 129-132

Babinot, J. F. , On Parapokornyella taxyae (Babinot); 133-136

Babinot, J. F. & Tambareau, Y., On Paracandona occitanica Babinot & Tambareau sp. nov.; 137-144

Bairdia jammuensis Singh & Tewari; 47-50

Bate, R. H. &. Mellish, C., On Cythereis lindiensis Bate; 59-62

Bate, R. H. & Mellish, C., On Eocytheridea kirtlingtonensis Bate & Mellish sp. nov; 55-58

Beyrichia (Altibeyrichia) kiaeri Henningsmoen; 29-32

Bolbihithis abdominalis Schallreuter; 145-148

chittagongensis, Leguminocythereis ; 101-104

Colin. J. P. , On Kefiella maresi Donze & Said; 67-70

Colin, J. P. & Rodriguez-Lazaro, J., On Navarracy there estellensis Colin & Rodriguez-Lazaro gen. et sp. nov.; 63-66

cornutus, Iberocypris ; 129-132

Costa himchariensis Ahmed sp. nov.; 105-108

Costa obliquifossa Ahmed sp. nov.; 109-112

costaforma, Ambostracon; 81 — 84

Cythereis lindiensis Bate; 59-62

Cytheretta (Cytheretta) jurinei (V. Munster); 9-16

Cytheretta (Cytheretta) semipunctata (Bornemann); 1-8

delicata, Ambostracon', 85-88

Eocytheridea kirtlingtonensis Bate & Mellish sp. nov. ; 55-58

estellensis, Navarracythere; 63-66

Eucythere argus (Sars); 71-76

europea, Ambostracon', 77-80

himchariensis, Costa ; 105-108

Maybury, C. A. &. Whatley, R. C.

Maybury, C. A. &. Whatley, R. C.

Maybury, C. A. &. Whatley, R. C.

Maybury, C. A. &. Whatley, R. C.

Maybury, C. A. &. Whatley, R. C.

Maybury, C. A. &. Whatley, R. C.

Maybury, C. A. &. Whatley, R. C.,

Horne, D. J., On Aurila woutersi Horne sp. nov.; 33-38

Horne, D. J. & Rosenfeld, A., On Eucythere argus (Sars); 71-76

Iberocypris cornutus Babinot; 129-132

jammuensis, Bairdia', 47-50

jhingrani, Paracypns ; 51-54

jurinei, Cytheretta ( Cytheretta ); 9-16

Kefiella maresi Donze & Said; 61-70

kiaeri, Beyrichia (Altibeyrichia)', 29-32

kirtlingtonensis, Eocythereidea ; 55-58

Leguminocythereis chittagongensis Neale & Ahmed sp. nov.; 101-104

lindiensis, Cythereis', 59-62

magna, Roundstonia', 93-96

Majoran, S., Reyment, R. & Reyment, E., On Togoina attitogonensis Apostolescu; 121-128

maresi, Kefiella', 67-70

On Ambostracon costaforma Whatley & Maybury sp. nov.; 81-84

On Ambostracon delicata Whatley & Maybury sp. nov.; 85-88

On Ambostracon europea Maybury & Whatley sp. nov.; 78-80

On Ambostracon perfecta Maybury & Whatley sp. nov.; 89-92

On Paracytheromorpha rimafossa Maybury & Whatley sp. gen. et nov.; 17-20

On Roundstonia magna Maybury & Whatley sp. nov.; 93-96

On Roundstonia minima Whatley & Maybury sp. nov.; 97-100

Mellish, C. & Bate. R. H., On Cythereis lindiensis Bate; 59-62

Mellish, C. & Bate, R. H., On Eocytheridea kirtlingtonensis Bate & Mellish sp. nov.; 55-58

minima, Roundstonia; 97-100

Navarracythere estellensis Colin & Rodriguez-Lazaro gen. et sp. nov.; 63-66

Neale, J. W. & Ahmed, S. T. On Leguminocythereis chittagongensis Neale & Ahmed sp. nov.; 101-104

nigeriensis, Veenia (Nigeria); 39-46

Nigeroloxoconcha oniseguni Reyment; 113-116

Nigeroloxoconcha oyesesei Reyment; 117-120

obliquifossa, Costa; 109-112

occitanica, Paracandona; 137-144

olbertzae, Wehrlia; 25-28

oniseguni, Nigeroloxoconcha; 113-116

oyesesei, Nigeroloxoconcha; 117-120

Paracondona occitanica Babinot & Tambareau sp. nov.; 137-144

Paracypris jhingrani Singh & Tewari; 51-54

Paracytheromorpha rimafossa Maybury & Whatley gen. et sp. nov.; 17-20

Parapokornyella taxyae (Babinot); 133-136

perfecta, Ambostracon; 89-92

Pollicott, P. D., On Beyrichia ( Altibeyrichia ) kiaeri Henningsmoen; 29-32

Retinoda sulcata (Kniipfer); 21-24

Reyment, E. & Reyment, R., On Nigeroloxoconcha oniseguni Reyment; 113-116

Reyment, E. & Reyment, R., On Nigeroloxoconcha oyesesei Reyment; 117-120

Stereo-Atlas of Ostracod Shells 13 (32) 150 ( 1986)

Index, Volume 13, 1986 (2 of 3)

Reyment, E. & Reyment, R., On Veenia ( Nigeria ) nigeriensis Reyment; 39-46

Reyment, E., Reyment, R. & Majoran, S., On Togoina attitogonensis Apostolescu; 121-128

Reyment, R. & Reyment, E., On Nigeroloxoconcha oniseguni Reyment; 113-116

Reyment, R. & Reyment, E., On Nigeroloxoconcha oyesesei Reyment; 117-120

Reyment, R. & Reyment, E., On Veenia (Nigeria) nigeriensis Reyment; 39-46

Reyment, R., Reyment, E. & Majoran, S., On Togoina attitogonensis Apostolescu; 121-128

rimafossa, Paracytheromorpha\ 17-20

Rodriguez -Lazaro, J. & Colin, J. P., On Nav an acy there estellensis Colin & Rodriguez-Lazaro gen. et sp. nov.; 63-66

Rosenfeld, A. & Horne, D. J., On Eucythere argus (Sars); 71-76

Roundstonia magna Maybury & Whatley sp. nov.; 93-96

Roundsionia minima Whatley & Maybury sp. nov. ; 97-100

Schallreuter, R. E. L., On Bolbihithis abdominalis Schallreuter; 145-148

Schallreuter, R. E. L., On Retinoda sulcata (Knupfer); 21-24

Schallreuter, R. E. L., On Wehrlia olbertzae Schallreuter; 25-28

semipunctata, Cytheretta (Cytheretta) ; 1-8

Singh, P., On Bairdia jammuensis Singh & Tewari; 47-50

Singh, P., On Paracypris jhingrani Singh & Tewari; 51-54

sulcata, Retinoda ; 21-24

Tambareau, Y. & Babinot, J. F., On Paracandona occitanica Babinot & Tambareau sp. nov.; 137-144

taxyae, Parapokornyella\ 133-136

Togoina attitogonensis Apostolescu; 121-128

Veenia ( Nigeria ) nigeriensis Reyment; 39-46

Wehrlia olbertzae Schallreuter; 25-28

Weiss, R. H., On Cytheretta (Cytheretta) jurinei (V. Munster); 9-16

Weiss, R. H., On Cytheretta (Cytheretta) semipunctata (Bornemann); 1-8

Whatley, R. C. & Maybury, C. A., On Ambostracon costaforma Whatley & Maybury sp. nov.; 81-84

Whatley, R. C. & Maybury, C. A., On Ambostracon delicata Whatley & Maybury sp. nov.; 85-88

Whatley, R. C. & Maybury, C. A., On Ambostracon europea Maybury & Whatley sp. nov.; 77-80

Whatley, R. C. & Maybury, C. A., On Ambostracon perfecta Maybury & Whatley sp. nov.; 89-92

Whatley, R. C. & Maybury, C. A., On Paracytheromorpha rimafossa Maybury & Whatley gen. et sp. nov.; 17-20

Whatley, R. C. & Maybury, C. A., On Roundstonia magna Maybury & Whatley sp. nov.; 93-96

Whatley, R. C. & Maybury, C. A., On Roundstonia minima Whatley & Maybury sp. nov.; 97-100

woutersi, Aurila; 33-38

Index, Volume 13, 1986 (3 of 3)

Stereo-Atlas of Ostracod Shells 13 (32) 151 (1986)

Index; Geological Horizon

See 1 (2) 5-22 (1973) for explanation of the Schedules in the Universal Decimal Classification

(113.312)

(113.313)

(113.331)

(116.222)

(116.313)

(116.331)

(116.333.3)

(118.13)

Middle Ordovician:

Wehrlia olbertzae; 25-28

Upper Ordovician:

Bolbihithis abdominalis; 145-148

Retinoda sulcata ; 21-24

Lower Silurian:

Beyrichia (Altibeyrichia) kiaeri ; 29-32

Bathonian:

Eocytheridea kirtlingtonensis ; 55-58

Albian:

Cythereis lindiensis; 59-62

Cenomanian:

Cythereis lindiensis; 59-62

Navarracy there estellensis; 63-66

Parapokornyella taxyae; 133-136

Maastrichtian :

Iberocypris cornutus; 129-132

Kefiella maresi; 61 -IQ

Nigeroloxoconcha oniseguni; 113-116

Nigeroloxoconcha oyesesei; 117-120

Paracandona occitanica ; 137-144

Veenia (Nigeria) nigeriensis; 39-46

Palaeocene:

Nigeroloxoconcha oniseguni ; 113-116

Nigeroloxoconcha oyesei ; 117-120

(118.14) Eocene:

Bairdia jammuensis; 47-50

Paracypris jhingrani; 51-54

Togoina attitogonensis ; 121-128

(118.15) Oligocene:

Cytheretta (Cytheretta) jurinei; 9—16

Cytheretta (Cytheretta) semipunctata ; 1-8

(118.2) Neogene:

Costa himchariensis ; 105-108

Costa obliquifossa ; 109-112

Leguminocythereis chittagongensis; 101-104

(118.22) Pliocene:

Ambostracon costaforma; 81-84

Ambostracon delicata ; 85-88

Ambostracon europea ; 77-80

Ambostracon perfecta; 89-92

Paracytheromorpha rimafossa ; 17-20

Roundstonia magna; 93-96

Roundstonia minima; 97-100

(119.9) Recent:

Aurila woutersi; 33-38

Eucy there argus; 71-76

(261.24)

(261.26)

(261.27)

(415)

(420)

(425.72)

(430.1)

(430.2)

(44)

Index; Geographical Location

See 1 (2) 5-22 (1973) for explanation of the Schedules in the Universal Decimal Classification

Baltic Sea:

Eucy there argus; 71-76

North Sea:

Eucythere argus; 71-76

Irish Sea and western waters of the British Isles:

Aurila woutersi; 33-38

Ireland:

Eucythere argus; 71-76

England:

Ambostracon europea; 77-80

Eucythere argus; 7 1—76

Paracytheromorpha rimafossa; 17-20

Roundstonia minima; 97-100

Oxfordshire:

Eocytheridea kirtlingtonensis; 55-58

German Federal Republic:

Bolbihithis abdominalis; 145-148

Cytheretta (Cytheretta) jurinei; 9-16

Cytheretta (Cytheretta) semipunctata; 1-8

Wehrlia olbertzae; 25-28

German Democratic Republic:

Retinoda sulcata; 21-24

France:

Ambostracon costaforma; 81-84

Ambostracon delicata; 85-88

Ambostracon europea; 77-80

Ambostracon perfecta; 89-92

Paracandona occitanica; 137-144

Paracytheromorpha rimafossa; 17-20

Parapokornyella taxyae; 133-136

Roundstonia magna; 93-96

(460) Spain :

Iberocypris cornutus; 129-132

Navarracy there estellensis; 63-66

(481) Norway:

Beyrichia (Altibeyrichia) kiaeri; 29-32

(540) India:

Bairdia jammuensis; 47-50

Paracypris jhingrani; 51-54

(549.2) Bangladesh:

Costa himchariensis; 105-108

Costa obliquifossa; 109-112

Leguminocythereis chittagongensis; 101-104

(55) Iran:

Cythereis lindiensis; 59-62

(611) Tunisia:

Kefiella maresi; 61-10

(669) Nigeria:

Nigeroloxoconcha oniseguni; 113-116

Nigeroloxoconcha oyesesei; 117-120

Togoina attitogonensis; 121-128

Veenia (Nigeria) nigeriensis; 39-46

(678) Tanzania:

Cythereis lindiensis; 59-62

Stereo-Atlas of Ostracod Shells: Vol. 13, Part 2

13 (16) 77-80

13 (17) 81-84

13 (18) 85-88

13 (19) 89-92

13 (20) 93-96

13 (21) 97-100

13 (22) 101-104

13 (23) 105-108

13 (24) 109-112

13 (25) 113-116

13 (26) 117-120

13 (27) 121-128

13 (28) 129-132

13 (29) 133-136

13 (30) 137-144

13 (31) 145-148

13 (32) 149-151

CONTENTS

On Ambostracon europea Maybury & Whatley sp. nov.; by C. A. Maybury

& R. C. Whatley

On Ambostacon costaforma Whatley & Maybury sp. nov.; by R. C.

Whatley & C. A. Maybury

On Ambostracon delicata Whatley & Maybury sp. nov.; by R. C. Whatley

& C. A. Maybury

On Ambostracon perfecta Maybury & Whatley sp. nov. ; by C. A. Maybury

& R. C. Whatley

On Roundstonia magna Maybury & Whatley sp. nov. ; by C. A. Maybury &

R. C. Whatley

On Roundstonia minima Whatley & Maybury sp. nov.; by R. C. Whatley

and C. A. Maybury

On Leguminocythereis chittagongensis Neal & Ahmed sp. nov. ; J. W. Neale

& S. T. Ahmed

On Costa himchariensis Ahmed sp. nov.; by S. T. Ahmed

On Costa obliquifossa Ahmed sp. nov.; by S. T. Ahmed

On Nigeroloxoconcha oniseguni Reyment; by R. A. Reyment & E. R.

Reyment

On Nigeroloxoconcha oyesesei Reyment; by R. A. Reyment & E. R.

Reyment

On Togoina attitogonensis Apostolescu; by R. A. Reyment, E. R. Reyment

& S. Majoran

On Iberocypris cornutus Babinot; by J. F. Babinot

On Parapokornyella taxyae (Babinot); by J. F. Babinot

On Paracandona occitanica Babinot & Tambareau sp. nov.; by J. F.

Babinot & Y. Tambareau

On Bolbihithis abdominalis Schallreuter; by R. E. L. Schallreuter

Index for Volume 13, 1986

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