A Stereo- Atlas of Ostracod Shells

edited by P. C. Sylvester-Bradfev and David T. Siveter

the Department of Geology

niversity of Leicester, England

INSTRUCTIONS TO AUTHORS

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

are invited. Full instructions may be obtained on request from the Editors. Format should

follow the style set by the majority of papers in this issue. The Editors should be

consulted for advice before figures for plates are mounted. Descriptive matter apart from

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

one page of text only.

Department of Geology, The University, Leicester.

ACKNOWLEDGEMENTS

The publication of this first volume of the Stereo-Atlas has been made possible by the

generous financial help of the British Petroleum Company Limited and Shell International

Petroleum Company Limited.

STEREO-VIEWING FOR USERS OF THE ATLAS

In order to gain maximum information and benefit from the use of the Stereo-Atlas it is

essential that the user view the micrographs stereoscopically. Small pocket-sized stereo-

viewers are most suitable for this purpose; two suppliers of such viewers are given below.

C. F. Casella & Co. Ltd., Regent House, Britannia Walk, London, N1 7ND.

Pocket stereoscope, model T15010 (£1.00 each; excluding packing and carriage).

Air Photo Supply Corp., 158, South Station, Yonkers, New York 10705.

Pocket stereoscope, model PS-2 ($8.65 each; excluding postage and handling).

The scanning electron microscope in the Department of Geology of the University of

Leicester was supplied by the Natural Environment Research Council under the terms of

Grant No. GR/3/95 for the purpose of micropalaeontological research.

Plates printed by Broadwater Press Limited, Welwyn Garden City, Herts., England.

Stereo-Atlas of Ostracod Shells, 1:16:89-92 (1973) Chrysocythere paradisus (1 of 4)

595.337.14 (118.213) (560:161.034.36): 551.351 + 552.52

ON CHRYSOCYTHERE PARADISUS DORUK sp. nov.

by Neriman Doruk

(University of Leicester, England)

Chrysocythere paradisus sp. nov.

Holotype: Brit. Mus. (Nat. Hist.) io 5189, 2 rv.

Type locality: Road cutting 3 km SW of Kuzucubelen, Mersin, Turkey. Approx, long.

34°27'E, lat. 36°48'N. Upper Miocene. Grey, sandy clay, with

molluscan shells and abundant foraminifera; presumed moderate depth.

Derivation of name: Latin, "a pleasure garden," from fancied resemblance of ornament to

gardens surrounding a fountain.

Figured specimens: Brit. Mus. (Nat. Hist.) io 5189 (RV: PI. 1:16:90, fig. 1? Pi. 1:16:92,

figs. 2, 3), 10 5190 (LV: Pi. 1:16:90, fig. 2; Pi. 1:16:92, figs. 1,

4). Both from type locality, the base of the section.

Explanation of Plate 1:16:90

Fig. 1, 2 RV, ext.; fig. 2, 2 LV, ext.

Scale A (250 ym ; x97) , fig. 1; scale B (250 ym ; x94) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:16:91 Chrysocythere paradisus (3 of 4)

Diagnosis: Polygonal fossae arranged in radiate groups, like the petals of a

flower, surrounding raised, intramural pores, which stand up on

pillars.

Remarks: Differs from C. cataphracta Ruggieri, 1962 (see Sylvester-Bradley &

Ruggieri 1973, Stereo-Atlas of Ostracod Shells, vol. 1, pt. 1, pp.

31-34) in details of reticulum. Sexual dimorphism distinct, males less

high and longer.

Distribution: Middle and Upper Miocene of Mersin and Adana areas,

Turkey .

Explanation of Plate 1:16:92

Fig. 1, 2 LV, int.; fig. 2, 2 RV, int.; fig. 3, RV, int. vent, knob-like structure;

fig. 4, LV, int. muse. sc.

Scale A (250 ym ; x78) , fig. 1; scale B (250 ym ; x82) , fig. 2; scale C (50 ym ; x434) ,

fig. 3; scale D (100 ym ; *288) , fig. 4.

Stereo-Atlas of Ostracod Shells, 1:16:90 Chrysocythere paradisus (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:16:92 Chrysocythere paradisus (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:17:93-96 (1973)

595.337.14 (119.9) (261.68:164.071.54): 551.352 (24.08.270)

Procythereis torquata (1 of 4)

ON PROCYTHEREIS TORQUATA (SKOGSBERG)

by Richard H. Benson

(Smithsonian Institution , Washington , D.C. , U.S.A.)

Genus PROCYTHEREIS Skogsberg, 1928

Type-species (original designation) : Cythereis (Procythereis) torquata Skogsberg, 1928

Procythereis torquata (Skogsberg, 1928)

Cythereis (Procythereis) torquata Skogsberg, Calif. Acad. Sci. Occas . Pap. , vol. 15, p. 19,

pi. 1, fig. 1, pi. 4, fig. 2, text-fig. 1 (1928).

Procythereis torquata (Skogsberg); Benson, Univ. Kans. Paleont. Contr. Arthro ., no. 6, p. 28,

(1964) .

Syntypes: U.S.N.M. 127428 and 127440.

Type locality: Tierra del Fuego, Puerto Condor.

Figured specimens: U.S.N.M. Coll. nos. 190025 (LV: PI. 1:17:94, fig. 1) 190027 (RV:

Pi. 1:17:94, fig. 2), and 190427 (RV: Pi. 1:17:96, figs. 1, 2). All

Recent from Tierra del Fuego, Cape Valentyn, Hero station no. 44,

depth 270 m, lat. 53°31'S, long. 70°33'W.

Explanation of Plate 1:17:94

Fig. 1, LV ext.; fig. 2, RV ext.

Scale A (250 ym ; x86) , fig. 1; scale B (250 ym ; *88) , fig* 2*

Stereo-Atlas of Ostracod Shells, 1:17:95 Procythereis torquata (3 of 4)

Text-fig. 1. Appendages and muscle-

scar pattern of Procythereis torquata.

Specimen from R/V Eltanin Station 453

(Ref: 477), E coast of Tierra del

Fuego; lat. 54°27'S, long. 66°12'W,

depth 31 m, coll. 21 January 1963.

1-2. Lt. and rt. partially fused

first antennae.

3-5. Thoracic legs, front to rear.

6. Thaerocytherid muscle-scar

pattern.

7. Mandible with trifurcate

mandibular epipodite.

8. Second antenna with spinning

bristle and feeder gland.

Explanation of Plate 1:17:96

Fig. 1, RV intc; fig. 2, int. muse. sc.

Scale A (250 ym ; *88) , fig* 1; scale B (125 ym ; *272) , fig* 2.

Stereo-Atlas of Ostracod Shells, 1:17:94

Procythereis torquata (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:17:96

Procythereis torquata (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:18:97-100 Procythereis iganderssoni (1 of 4)

595.337.14 (119.9) (261.68:164.073.54 + 261.68:164.071.54): 551.35 (24.08.22 + 24.08.270)

ON PR0CYTHERE IS IGANDERSSONI (SK0GSBERG)

by Richard H. Benson

(Smithsonian Institution 3 Washington 3 D.C. U.S.A.)

Procythereis iganderssoni [Skogsberg, 1928)

Cythereis (Procythereis) iganderssoni Skogsberg, Calif. Acad. Sci. Occas . Pap., vol. 15,

p. 24, pi. 1, fig. 2, text-fig. 2 (1928).

Procythereis iganderssoni (Skogsberg); Hartmann, Mitt. hamh. zool . Mus. Inst., 60, p. 237

(1962) .

Procythereis iganderssoni (Skogsberg); Benson, Univ. Kans. Paleont. Contr. Arthro . , no. 6,

p. 28 (1964).

Explanation of Plate 1:18:98

Fig. 1, LV ext.; fig. 2, RV ext.

Scale A (250 yin ; xl05) , figs. 1, 2.

Stereo-Atlas of Ostracod Shells, 1:18:99 Procythereis iganderssoni (3 of 4)

Syntypes: u.s.n.m. 127417

Type locality: Tierra del Fuego, Cape Valentyn.

Figured specimens: U.S.N.M. Coll. nos. 190019 (LV: Pi. 1:18:98, fig. 1), Recent from

Tierra del Fuego, Fortesque Bay, Hero station 48, depth 22 m; lat.

53°41'S, long. 72°0'45,,W. 190026 (RV: Pi. 1:18:98, fig. 2) and 190554

(RV: Pi. 1:18:100, figs. 1, 2), both Recent from Tierra del Fuego,

Cape Valentyn, Hero station 44, depth 270 m; lat. 53°31'S, long.

70°33'W.

Explanation of Plate 1:18:100

Fig. 1, RV int.; fig. 2, int. muse. sc.

Scale A (250 ym ; xio7) , fig. 1; scale B (125 ym ; x280) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:19:101-108 (1973) Pattersoncypris micropapillosa (1 of 8)

595.337.12 (116.312/116.313) (81:164.040.08): 551.312+552.53/553.54

ON PATTERSONCYPRIS MICROPAPILLOSA BATE

by R. H. Bate

(British Museum ( Natural History) 9 London)

Genus PATTERSONCYPRIS Bate, 1972

Type-species (original designation): Pattersoncypris micropapillosa Bate, 1972

Pattersoncypris micropapillosa Bate, 1972

Pattersoncypris micropapillosa sp. nov. R. H. Bate, Palaeontology, vol. 15, pt. 3, p. 381,

pis. 66-71 (1972).

Holotype: Brit. Mus. (Nat. Hist.) 10 4680, 2 carapace.

Type locality: Santana Formation (Aptian/Albian) , Serra do Araripe, Ceara, Brazil.

Figured specimens: Brit. Mus. (Nat. Hist.) io 4693 ( 2 car.: PI. 1:19:102, fig. 1), 10 4707^

(2 : PI. 1:19:102, figs. 2, 3), IO 4714 ( 2 : Pi. 1:19:104, fig. 1),

IO 4708 ( 2 car.: Pi. 1:19:104, fig. 2; Pi. 1:19:106, fig. 3), IO 4710

(d* car.: Pi. 1:19:106, fig. 1), IO 4718 ( 2 car.: Pi. 1:19:106, fig. 2),

IO 4692 ( 2 car.: Pi. 1:19:108, fig. 1), IO 5027 ( 2 car.: Pi. 1:19:108,

figs. 2-3). All from the type locality.

Explanation of Plate 1:19:102

Fig. 1, 2 car., RV & furca. ; fig. 2, 2 antennules, antennae with swimming setae, mandible &

maxilla; fig. 3, 2 showing appendages.

Scale A (250 ym ; *73) , fig. 1; scale B (100 ym ; xl75) , fig. 2; scale C (250 ym ; xioo) ,

fig. 3.

Stereo-Atlas of Ostracod Shells, 1:19:103 Pattersoncypris micropapillosa (3 of 8)

Diagnosis: Pattersoncypris having very small papillae on ventral surface.

Remarks: All figured specimens were obtained during the acetic acid treatment of

fish skeletons from two calcareous nodules. The ostracods were released

from the calcareous nodules because the calcium carbonate of the shells

had been altered to calcium phosphate. Similarly the excellent preserv-

ation of the soft tissue is due to their mineralisation soon after death;

there is no evidence of decay. The assignment of Pattersoncypris to the

Cyprididae on details of the carapace shape, hinge and muscle scars is

confirmed by the soft part anatomy, especially that of the 1st. thoracic

appendage which is adapted proximally for pushing food into the mouth

and distally terminates in an inwardly turned hook. Unlike modern cyprids,

however, this terminal hook is present in the female as well as in the

male . In modem cyprids the male uses the hooks to grasp the female

during mating; the hook prevents him from sliding off the posterodorsal

part of her carapace. That the female also possesses thoracic hooks

might indicate that she also used these in mating, suggesting a probable

venter to venter position, currently unknown amongst freshwater ostracods

but recorded for some marine species. Apart from the terminal hook of the

1st. thoracic appendage being present in the female the remaining

anatomy is typical of the family which has undergone little change since

Lower Cretaceous times.

Explanation of Plate 1:19:104

Fig. 1, 2 , branchial plate; fig. 2, 2 , upper lip, mandibles, maxillae, 1st. thoracic

appendages.

Scale A (100 ym ; x350) , fig. 1; scale B (100 ym ; x400) , fig. 2.

_ ; 4-

I

Pattersoncypris micropapillosa (2 of 8)

Stereo-Atlas of Ostracod Shells, 1:19:104

Stereo-Atlas of Ostracod Shells, 1:19:102

Pattersoncypris micropapillosa (4 of 8)

Stereo-Atlas of Ostracod Shells , 1:19:105 Pattersoncypris micropapillosa (5 of 8)

Explanation of Plate 1:19:106

Fig. 1, a* car., copulatory appendage; fig. 2, ? car., antennules, antennae; fig. 3, $ car.,

2nd. and 3rd. thoracic appendages.

Scale A (250 ym ; *80) , fig. 1; scale B (100 yin ; xl50) , figs. 2, 3.

Stereo- Atlas of Ostracod Shells, 1:39:107 Pattersoncypris micropapillosa (7 of 8)

Remarks (ccntd.): Perhaps the most remarkable preservation is that found in specimen

10 5027, a female carapace, in which the sensory setae are still pre-

served. Little or no work has been undertaken on the marginal setae of

living ostracods which makes it difficult to comment on the significance

of the conical terminal caps. Close examination of the terminal caps

reveals fine striae extending around the cap (Pi. 1:19:108). This

emphasises the incredible fineness of detail which has survived for 100

million years.

Explanation of Plate 1:19:108

Fig. 1, $ car., LV; figs. 2, 3, $ car., anterior marginal setae with terminal caps.

Scale A (250 ym ; *73) , fig. 1; scale B (25 ym ; *600) , fig. 2; scale C (3 ym ; *6400) ,

fig. 3.

Stereo- Atlas of Ostracod Shells, 1:19:108

Stereo-Atlas of Ostracod Shells, 1:19:106

Pattersoncypris micropapillosa (6 of 8)

Pattersoncypris micropapillosa (8 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:109-116 (1973) Mutilus retiformis (1 of 8)

595.337.14 (118.22) (458.1:161.012.37): 551.35+552.542

ON MUTILUS RETIFORMIS (TERQUBf)

by G. Ruggieri and P. C. Sylvester-Bradley

(University of Palermo Italy and University of Leicester 3 England)

Genus MUTILUS Neviani, 1928

Type-species (designated by Ruggieri, 1956): Cythereis (Mutilus) laticancellata Neviani,

1928 [=Cythere retiformis Terquem, 1878, fid. Ruggieri, 1956]

Mutilus retiformis (Terquem, 1878)

Cythere retiformis sp. nov. Terquem, Mdm. Soc. geol . Fr., ser. 3, vol. 1, p. 116, pi. 13,

figs. 16a-d (1878).

Cythereis (Mutilus) laticancellata sp. nov. Neviani, Memorie Accad. pont. Nuovi Lincei ,

ser. 2, vol. 11, p. 93, pi. 2, figs. 66-68 (1928).

Mutilus (Mutilus) retiformis (Terquem); Ruggieri, Atti . Soc. ital . Sci . nat. , vol. 95, pp.

169-171, figs. 2-3 (1956).

Mutilus retiformis (Terquem); Sissingh, Bull. Micropaleontol . Utrecht, vol. 6, p. 124, pi. 9,

fig. 12 (1972).

Explanation of Plate 1:20:110

Figs. 1-3 RV: fig. 1, ext. lat. ; fig. 2, ext. vent.; fig. 3, ext. dors. obi. Fig. 4, LV

ext. lat.

Scale A (500 ym ; x72) , figs. 1, 4 (length of both specimens, 800 ym) ; scale B (500 ym ;

x68) , figs. 2, 3.

Stereo- Atlas of Ostracod Shells, 1:20:111

Mutilus retiformis (3 of 8)

Type specimens: Natural History Museum, Paris [fid. Catalogue of Ostracoda, Ellis &

Messina] .

Type locality: Upper Pliocene or Lower Quaternary, Rhodes, Greece.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 5546 (RV: Pi. 1:20:110, figs. 1-3; PI.

1:20:112, figs. 1, 2), 10 5547 (LV: Pi. 1:20:110, fig. 4; PI. 1:20:112,

fig. 3), 10 5548 (LV: Pi. 1:20:114, figs. 1, 5, 6; PI. 1:20:116,

figs. 1-4), 10 5549 (RV: Pi. 1:20:114, figs. 2-4). All specimens

from Middle Pliocene (grey marls) of River Modione, near Portanna,

(Trapani, Sicily), long. 12o50'E, lat. 37°22'N (coll. G. Ruggieri).

Diagnosis: Sub-quadrate in lateral outline with wide, deep polygonal fossae.

Explanation of Plate 1:20:112

Figs. 1-2 RV ext. lat. to show normal pore canals; fig. 3, LV ext. lat. to show eye tubercle.

Scale A (100 ym ; x330) , fig. 1; scale B (50 ym ; x660) , fig. 2; scale C (100 ym ; x350) ,

fig. 3.

Stereo-Atlas of Ostracod Shells, 1:20:110

Mutilus retiformis (2 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:112

Mutilus retiformis (4 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:113 Mutilus retiformis (5 of 8)

Remarks: Van Morkhoven (1963, Post-Palaeozoic Ostracoda, vol. 2, p. 138) claimed

that Cythere retiformis Terquem was "conspicuously different in outline

and not identical" to Cythereis laticancellata Neviani, and thought that

C. retiformis might be a junior synonym of Cythere normani Brady, 1866.

He was placing too much reliance on the rough sketches of Neviani and

he was wrong about C. normani, for this species belongs to the genus

Bradleya (Benson 1972, Smithson . Contr . Paleobiol., no. 12, pp. 38-39,

text-fig. 13c; pi. 1, fig. 7; pi. 7, fig. 8) and it does not occur in

either the Pliocene of Vallebiaia (the type locality of C. lati-

cancellata) , or (so far as we know) in the Island of Rhodes (the type

locality of C. retiformis) whereas M. retiformis as here interpreted is

abundant in both localities.

Explanation of Plate 1:20:114

Figs. 1, 5, 6, LV int. lat.; figs. 2-4, RV int. lat.; with details of terminal elements

of hinge.

Scale A (500 ym ; x70) , figs. 1, 2 (length of both specimens, 820 ym) ; scale B (20 ym ;

*210) , figs. 3-6.

Stereo-Atlas of Ostracod Shells, 1:20:115 Mutilus retiformis (7 of 8)

Remarks (contd.): Sissingh (1972, op. cit., p. 124) suggested that what he termed

"tubular normal pore canals" should be given special diagnostic weight

in the generic definition. The figures we give of the normal pore canals

show that the sieve plates terminate in bosses which rise from the sola

of each fossa (Pi. 1:20:112, figs. 1, 2). We doubt whether these are

properly described as "tubular normal pore canals." Pores also

terminate higher chimney-like structures between some of the fossae which

border the dorsal and ventral margins (Pi. 1:20:110, figs. 1-4), but

these appear to be relicts of intramural pores that hav6 survived the

degeneration of the transverse muri. We have been unable to determined

whether or not they contain sieve plates.

The stellar scars on the internal tubercles that lie to the posterior

of the mandibular fulcrum (Pi. 1:20:116, figs. 1-4) are found also in

other species of the genus. We suggest the term "stellar tubercle" for

this feature. Two stellar tubercles are developed on each valve, both

lying to the posterior of the mandibular fulcrum, one dorsally and one

ventrally situate, and forming with the mandibular fulcrum an isosceles

triangle (Pi. 1:20:114, figs. 1, 2; Pi. 1:20:116, fig. 1).

Explanation of Plate 1:20:116

Figs. 1-4 LV int. lat. to show muse, sc., mandibular fulcrum, vent, stellar tubercle.

Scale A (100 ym ; x280) , fig. 1; scale B (20 ym ; xgso) , fig. 2; scale C (10 ym ; xi960) ,

fig. 3; scale D (5 ym ; x5000) , fig. 4.

Stereo-Atlas of Ostracod Shells, 1:20:114

Mutilus retiformis (6 of 8)

Stereo-Atlas of Ostracod Shells, 1:20:116

Mutilus retiformis (8 of 8)

Stereo-Atlas of Ostracod Shells, 1:21:117-120 (1973)

595.337.14 (118.213) (560:161.036.36): 551.351+552.513

Mutilus keiji (1 of 4)

ON MUTILUS KEIJI RUGGIERI

by Neriman Doruk

(University of Leicester 3 England)

Mutilus keiji Ruggieri, 1962

Mutilus (Mutilus) keiji G. Ruggieri, Paleontogr. ital . , vol. 56, mem. 2, p. 36, pi. 4, figs.

5-7 (1962).

Holotype: Istituto di Geologia e Paleontologia, Palermo (OCR, Si. no. 1339), 2 ,

carapace.

Type locality: Enna, Italy. Approx, lat. 37°34'N, long. 14°17'E. Tortonian. Grey sandy

clay with abundant foraminifera, and Ostrea, Chlamys , Balanus and

echinoderm shells.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 4937 (RV: PI. 1:21:118, fig. 1; PI. 1:21:120,

fig. 2), 10 4938 (LV: Pi. 1:21:118, fig. 2), 10 4939 (LV: Pi. 1:21:120,

figs. 1, 3). All from a road cutting between Babatorun and Com, Turkey;

1 km SW of Babatorun. Uppermost Miocene. 10 4937 and 10 4939 from the

base; 10 4938 4 m from the base of the section. Yellow sandstone with

abundant foraminifera and molluscan shell fragments, presumed shallow

marine (littoral). Approx, long. 36°15'E, lat. 36°04'N.

Explanation of Plate 1:21:118

Fig. 1, 2 RV, ext.; fig. 2, a* LV, ext.

Scale A (250 ym ; xl23) , fig. 1; scale B (250 ym ; *118) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:21:119 Mutilus keiji (3 of 4)

Diagnosis: Surface reticulate, fossae large, deep.

Remarks: Always three frontal scars, 5-6 adductor scars, with undivided

or divided ventromedian scars (see text-fig. 1, and Pi. 1:21:120,

fig. 3). Posterior marginal spines: 3-9; anterior marginal

spines: 8-18. Sexual dimorphism: males more elongate.

Distribution: Tortonian, Italy (Ruggieri 1962) ; Upper Miocene in

Tarsus and Antakya regions of Turkey.

Text-fig. 1 Muscle scars

fioo

o <5?

0

Explanation of Plate 1:21:120

Fig. 1, 2 LV, int.; fig. 2, 2 RV, int.; fig. 3, LV, int. muse. sc.

Scale A (250 ym ; xioi) , figs. 1, 2; scale B (100 ym ; x306) , fig. 3.

Mutilus. keiji (2 of 4)

Mutilus keiji (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:21:118

Stereo-Atlas of Ostracod Shells, 1:21:120

Stereo-Atlas of Ostracod Shells, 1:22:121-124 (1973) Mutilus cimbaeformis (1 of 4)

595.337.14 (118.22 + 119) (564.3:161.033.35 + 454.3:161.011.44): 551.351 + 552.513

ON MUTILUS CIMBAEFORMIS (SEGUENZA)

by Neriman Doruk

(University of Leicester } England)

Mutilus cimbaeformis (Seguenza, 1882)

Cythere cimbaeformis G. Sequenza, Naturalista sicil. , II-V, p. 22, pi. 1, figs. 6a-d (1882) .h

Hemicythere cimbaeformis (Sequenza); G. Ruggieri, G. Geol., ser. 2, vol. 21, p. 1, fig. 2,

text-fig. 22 (1950) .

Mutilus cimbaeformis (Seguenza) ; F. Uliczny, Hemicytheridae und Trachyleberididae aus dem

Pliozan der Insel Kephallinia, Dissertation, Univ. Munich, p. 52, pi. 14, fig. 7 (1969).

Holotype : Depository not known. Probably lost during Messina earthquake of 1908

(Ruggieri 1963, Boll. Soc. paleont. ital. , 1 (2), p. 3).

Type locality; Rizzola, Sicily. Quaternary.

Explanation of Plate 1:22:122

Fig. 1, 2 RV, ext.; fig. 2, c f LV, ext.

Scale A (250 ym ; x98) , fig. 1; scale B (250 ym ; xl07) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:22:123

Mutilus cimbaeformis (3 of 4)

Figured specimens: Brit. Mus. (Nat. Hist.) 10 4940 (RV: PI. 1:22:122, fig. 1), 10 4941 (LV:

Pi. 1:22:122, fig. 2), 10 4942 (LV: Pi. 1:22:124, fig. 1), 10 4943 (RV:

Pi. 1:22:124, figs. 2, 3). 10 4940, 10 4942 and 10 4943 from drillings

at Kato-Lakatamia, Cyprus, 4-5 km SW of Nicosia; Pliocene; presumed

shallow marine; approx, lat. 35°08'N, long. 33°18'E. 10 4941 from Imola,

Italy; Quaternary; fine-grained sandstone; approx, long. ll043'E, lat.

44°22'N (coll. G. Ruggieri).

Diagnosis: Characteristic ornament.

Remarks: Always 3 frontal scars; 5 adductor scars (see Pi. 1:22:124, fig. 3).

Posterior with variable number of marginal spines (1-6) . Sexual

dimorphism: males more elongate. Anterior marginal carina continuous

with ventrolateral carina in males, interrupted by 1 or 2 fossae in

females (see Pi. 1:22:122, figs. 1, 2).

Distribution : Post-Pliocene, Quaternary; Italy (Ruggieri 1950) . Middle Pliocene-

Pleistocene; Greece (Uliczny 1969) , Cyprus and Turkey.

Explanation of Plate 1:22:124

Fig. 1, ? LV, int.; fig. 2, ? RV, int.; fig. 3, RV, int. muse. sc.

Scale A (250 ym ; x85) , figs. 1, 2; scale B (100 ym ; x280) , fig. 3.

Stereo-Atlas of Ostracod Shells, 1:22:122

Mutilus cimbaeformis (2 of 4)

Mutilus freudenthali (1 of 4)

Stereo-Atlas of Ostracod Shells, 1:23:125-128 (1973)

595.337.14 (118.213) (560:161.036.36): 551.351 + 552.54

ON MUTILUS FREUDENTHALI (SISSINGH)

by Neriman Doruk

(University of Leicester 3 England)

Mutilus freudenthali (Sissingh, 1972)

Aurila freudenthali W. Sissingh, Bull. Micropaleontol . Utrecht, vol. 6, p. 116, pi. 9,

fig. 3 (1972).

Holotype: Deposited in the Utrecht Micropalaeontological collection, o* LV.

Type locality: Province of Khania, Crete, S Aegean Islands (see Sissingh 1972, p. 19).

Approx, long. 24°20'E, lat. 35°25'N. Upper Miocene (Tortonian) 1 White

and beige fossiliferous marls with abundant concretions.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 4994 (RV: PI. 1:23:126, fig. 1; Pi. 1:23:128,

fig. 2), 10 4995 (LV: Pi. 1:23:126, fig. 2), 10 4996 (RV: Pi. 1:23:128,

fig. 3). The specimen figured in Pi. 1:23:128, fig. 1 has been broken

after photography. All the figured specimens are from a stream cutting

about 200-300 m S of Sanli village, Antakya region of Turkey. Tortonian

(Upper Miocene). Bioclastic limestone with molluscan shells, presumed

shallow marine (sublittoral). Approx, long. 36°13'E, lat. 36°07'N.

Explanation of Plate 1:23:126

Fig. 1, <f RV, ext.; fig. 2, 2 LV, ext.

Scale A (250 ym ; x93) , fig. 1; scale B (250 ym ; *88) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:23:127 Mutilus freudenthali (3 of 4)

Diagnosis: Semicircular outline with horizontal venter giving triangular cross

section. Deeply punctate, the fossae variably shaped, with excavate

muri; surface minutely foveolate.

Remarks: Always 3 frontal scars; 4-6 adductor scars with undivided or divided

median scars. Sexual dimorphism: females more convex dorsally.

Distribution: Upper Miocene (Tortonian) of Crete, Aegean Islands (Sissingh 1972);

Upper and uppermost Miocene of Antakya region, Turkey.

Explanation of Plate 1:23:128

Fig. 1, cs* LV, int.; fig. 2, d* RV, int.; fig. 3, RV, int. muse. sc.

Scale A (250 ym ; *72), fig. 1; scale B (250 ym ; *75) , fig. 2; scale C (100 ym ; *232) ,

fig. 3.

Stereo-Atlas of Ostracod Shells, 1:23:126 Mutilus freudenthali (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:24:129-136 (1973) Mutilus convexus (1 of 8)

595.337.14 (119.9 + 118.22) (262.4:161.026.38 + 564.3:161.033.35 + 429.9:162.006.51): 551.351

ON MUTILUS CONVEXUS (BAIRD)

by Neriman Doruk

(University of Leicester, England)

Mutilus conveccus (Baird, 1850)

Cythere convexa W. Baird, Ray. Soc . Pubis., p. 134, pi. 21, fig. 3 (1850).

Cythereis convexa (Baird); G. W. Muller, Zool. Jber. Neapel., Berlin, no. 21, p. 366, pi. 28,.

figs. 14, 19; pi. 30, figs. 49-51; pi. 35, figs. 6, 13, 19-21 (1894)

[ non Hemicythere convexa (Baird); G. Ruggieri, G. Geol . , ser. 2, vol. 23, p. 88, pi. 6,

fig. 56 (1953).]

Aurila convexa (Baird); V. Pokorny, Acta Univ. Carol. Geol., 3, p. 17, figs. 8-14 (1955).

Aurila convexa (Baird); C. W. Wagner, Sur les Ostracodes du Quaternaire Recent des Pays-Bas

et leur utilisation dans l'etude geologique des depots Holocenes, Dissertation, Univ. de

Paris, p. 59, pi. 25, figs. 1-6 (1957).

Aurila livathoensis F. Uliczny, Hemicytheridae und Trachyleberididae aus dem Pliozan der

Insel Kephallinia , Dissertation, Univ. Munich, p. 32, pi. 12, figs. 7-9; [non A. c. convexa

(Baird) p. 21, pi. 11, figs. 1, 2; non A. c. emathiae p. 22, pi. 1, figs. 7, 8, pi. 11,

figs. 3, 4] (1969).

[non Aurila convexa (Baird); H. Uffenorde, Gottinger Arb. Geol. Palaont. , no. 13, p. 77,

pi. 8, fig. 4 (1972).]

Explanation of Plate 1:24:130

Fig. 1, ? RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; *107) , fig. 1; scale B (250 ym ; xll5) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:24:131 Mutilus convexus (3 of 8)

Syntypes: Types from Tenby kept in the Zoological section of British Museum.

Type localities: Torquay, SE Devonshire; Tenby, S Wales.

Figured specimens: Brit. Mus. (Nat. Hist.) 10 5659 (RV: Pi. 1:24:130, fig. 1), 10 5660 (LV:

Pi. 1:24:130, fig. 2; Pi. 1:24:132, fig. 1), 10 5661 (RV: Pi. 1:24:132,

figs. 2, 3), 10 5662 (RV: Pi. 1:24:134, fig. 1), 10 5663 (LV:

Pi. 1:24:134, fig. 2; Pi. 1:24:136, fig. 3), 10 5664 (LV: PI. 1:24:136,

fig. 1), 10 5716 (LV: Pi. 1:24:136, fig. 2). 10 5659 dredged from Urla

Bay, W coast of Turkey, 20 m below surface; subrecent; littoral; approx,

long. 26°47'E, lat. 38°19'N. 10 5660, 10 5661 and 10 5716 from drillings

near Nicosia, Cyprus; Pliocene; presumed littoral; approx, lat. 35°08'N,

long. 33°18'E. 10 5662, 10 5663 and 10 5664 from Westdale Bay, Wales;

Recent; approx, lat. 51°43'N, long. 5°11'W (coll, by P. C. Sylvester-

Bradley) .

Diagnosis: Shape distinctive, opaque area of consistent pattern.

Explanation of Plate 1:24:132

Fig. 1, 9 LV, int.; fig. 2, a* RV, int.; fig. 3, RV, int. muse. sc.

Scale A (250 ym ; *97), figs. 1, 2; scale B (100 ym ; *300) , fig. 3.

Stereo-Atlas of Ostracod Shells, 1:24:130

Mutilus convexus (2 of 8)

Stereo-Atlas of Ostracod Shells, 1:24:133 Mutilus convexus (5 of 8)

_ Remarks: Generic assignment: Cythere convexa Baird is the type species of the

genus Aurila Pokorny (1955, p. 17). Sissingh (Bull. Micropaleontol .

Utrecht, 1972, p. 24) claims to be able to distinguish Mutilus from

Aurila on the basis of "tubular pore canals." I have been unable to find

any consistent difference between the pore canals of species assigned to

the two genera. Indeed all characters appear to be gradational and I am

forced to regard the two genera as synonymous. Differs from M. speyeri

(Brady) and M. versiculatus in shape. Frontal scars 2 or 3; adductor

scars 5 or 6 with undivided or divided ventromedian adductor scars.

Opaque area

LV *53

Sexual dimorphism: males less high (see Pi. 1:24:136, fig. 2).

Distribution: Recent in Atlantic and Mediterranean. Miocene-Quaternary as fossil in

Europe. Miocene, Pliocene and Recent in Turkey and Cyprus.

Explanation of Plate 1:24:134

Fig. 1, 2 RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; *105) , figs. 1, 2.

Stereo-Atlas of Ostracod Shells, 1:24:135

Mutilus convexus (7 of 8)

Explanation of Plate 1:24:136

Fig. 1, sieve plates and papillate fossae; fig. 2, o" LV, ext.; fig. 3, detail of post.

Scale A (10 ym ; *2160) , fig. 1; scale B (250 ym ; *94), fig. 2; scale C (250 ym ; *450) ,

fig. 3.

Stereo-Atlas of Ostracod Shells, 1:24:134

Mutilus convexus (6 of 8)

Stereo-Atlas of Ostracod Shells, 1:24:136

Mutilus convexus (8 of 8)

Stereo-Atlas of Ostracod Shells, 1:25:137-140 (1973) Mutilus speyeri (1 of A)

595.337.14 (118.22 + 119.1) (262.2:161.035.36): 551.351

ON MUTILUS SPEYERI (BRADY)

by Neriman Doruk

(University of Leicester England)

Mutilus speyeri (Brady, 1868)

Cythere speyeri G. S. Brady, Ann. Mag. nat. Hist., vol. 4, ser. 2, p. 222, pi. 15, fig. 8,

non figs. 9-11 (1868).

Cythereis speyeri (Brady); G. W. Muller, Zool . Jber . Neapel., Berlin, no. 21, p. 367,.

pi. 32, figs. 24, 25, 28 (1894).

Aurila speyeri (Brady); P. Ascoli, Archo Oceanogr . Limnol., vol. 14, fas. 1, p. 97, pi. 1,

fig. 5 (1965).

Syntypes: Apparently at Hancock Museum, Newcastle-upon-Tyne, England ( Ostracod -

ologist, no. 19, pp. 7, 12, June 1972 & Sissingh 1972).

Type localities: Islands of Siros and Tenedos off the W coast of Turkey.

Figured specimens: Brito Mus. (Nat. Hist.) 10 4976 (RV: Pi. 1:25:138, fig. 1; PI. 1:25:140,

figs. 2, 3), 10 4977 (LV: Pi. 1:25:138, fig. 2; Pi. 1:25:140, fig. 1).

Both from drillings off the S coast of Turkey; Pliocene-Pleistocene,

340 feet below the sea floor; presumed shallow marine. Approx, long.

35°04 *E , lat. 36°26'N.

Explanation of Plate 1:25:138

Fig. 1, ? RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; *84) , fig. 1; scale B (250 ym ; *81) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:25:139 Mutilus speyeri (3 of 4)

Diagnosis: Rectangular shape, evenly rounded dorsal arch. Diagnostic opaque area.

Remarks: Sexual dimorphism: females shorter and a little higher.

Distribution: Recent: W coast of Turkey (Brady 1868) ; Gulf of Naples (Muller 1894) ;

Adriatic Sea (Ascoli 1965; Masoli 1968, Mem. Mus. Tridentino Sci. Nat.);

Limskikanal, Istrian coast (Uffenorde 1972, Gottinger Arb . Geol.

Palaont.) . Pliocene-Pleistocene: Cephalonia, Greece (Uliczny 1969,

Hemicytheridae und Trachyleberididae aus dem Pliozan der Insel

Kephallinia. Dissertation, Univ. Munich); Rhodes, Greece (Sissingh

1972, Bull. Micropaleontol . Utrecht ); Turkey.

Explanation of Plate 1:25:140

Fig. 1, $ LV, int.; fig. 2, $ RV, int. ; fig. 3, RV, int. muse. sc.

Scale A (250 ym ; x65) , fig. 1; scale B (250 ym ; x68) , fig. 2; scale C (100 ym ; x292) ,

fig. 3.

Stereo-Atlas of Ostracod Shells, 1:25:140

Mutilus speyeri (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:26:141-144 (1973) Mutilus albicans (1 of 4)

595.337.14 (118.213) (560:161.036.36 + 454.4:161.012.43): 551.351 + 552.513 + 552.54

ON MUTILUS ALBICANS RUGGIERI

by Neriman Doruk

(University of Leicester 3 England)

Mutilus albicans Ruggieri, 1958

Mutilus (Aurila) albicans G. Ruggieri, Atti. Soc . ital . Sci . nat . , vol. 97, ser. 2, p. 133,

figs. 1, 2, 16-21, 26, 27 (1958).

Aurila albicans (-Ruggieri); W. Sissingh, Bull. Micropaleontol . Utrecht. , vol. 5, p. 113,

pi. 8, fig. 4 (1972).

Holotype: o* L V, OCR Si. 1605/1. Deposited in the Istituto di Geologia e

Paleontologia (University of Palermo) .

Type locality: Republic of San Marino, near Casa i Gessi, Italy. Approx, long. 12°26'E,

lat. 43°56'N. Upper Miocene (Sahelian).

Figured specimens: Brit. Mus. (Nat. Hist.) 10 5654 (RV: Pi. 1:26:142, fig. 1), 10 5655 (LV:

Pi. 1:26:142, fig. 2), 10 5656 (LV: Pi. 1:26:144, fig. 1), 10 5657 (RV:

PI. 1:26:144, fig. 3), 10 5658 (RV: Pi. 1:26:144, fig. 2). 10 5654 and

10 5655, from a stream cutting about 300 m S of Sanli, Turkey; Upper

Miocene bioclastic limestone; presumed shallow marine; approx, long.

36°13 *E, lat. 36°07,N.

Explanation of Plate 1:26:142

Fig. 1, <f RV, ext.; fig. 2, $ LV, ext.

Scale A (500 ym ; *79) , fig. 1; scale B (500 ym ; x84) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:26:143 Mutilus albicans (3 of 4)

Figured specimens: 10 5656 and 10 5657 from a road cutting 1 km SW of Babatorun, Turkey;

(cantd. ) Uppermost Miocene; yellow sandstone; presumed littoral; approx, long.

36°15'E, lat. 36°04'N. 10 5658 from type locality (coll. G. Ruggieri).

Text-fig. 1 Opaque area RV *48

Text-fig. 2 Muscle scars

Diagnosis: The outline is diagnostic and the carapace rather tumid.

Remarks: Frontal scars 2 or 3; adductor scars 5 or 6 with undivided or divided

ventromedian scars (see text-fig. 2) . Eye tubercle slightly to strongly

marked. Varies in size and in the number of puncta. Juveniles with more

puncta. Sexual dimorphism very distinct; males more elongate and less

tumid. Distribution: Middle-Upper Miocene, Gavdhos and Crete, S Aegean

Islands (Sissingh 1972) ; Upper Miocene, San Marino, Italy (Ruggieri

1858) , and Antakya region, Turkey.

Explanation of Plate 1:26:144

Fig. 1, d LV, int.; fig. 2, c f RV, int. ; fig. 3, int. muse. sc.

Scale A (500 ym ; *76) , fig. 1; scale B (500 ym ; *69) fig* 2 ; scale C (100 ym ; *280) t

fig. 3.

Stereo-Atlas of Ostracod Shells, 1:26:142

Stereo-Atlas of Ostracod Shells, 1:26:144

Mutilus albicans (4 of

4)

Mutilus albicans (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:27:145-148 (1973) Sleia troglodytophila (1 of 4)

595.336.11 (113.331) (424.7:162.003.52): 551.35 + 552.542

ON SLEIA TROGLODYTOPHILA MARTINSSON

by David J. Sivetet

(University of Leicester 3 England)

Sleia troglodytophila Martinsson, 1962

Beyrichia Kloedeni , M'Coy var. granulata, Jones; T. R. Jones & H. B. Holl, Ann. Mag. nat.

Hist., ser. 5, vol. 17, p. 350, pi. XII, fig. 2 (1886).

[ ? Beyrichia tuberculata , (Kloden) var. gibbosa, Reuter; T. R. Jones & H. B. Holl, Ann.

Mag. nat. Hist., ser. 5, vol. 17, p. 349, pi. XII, fig. lb, ( non la), (1886).]

Beyrichia granulata (Jones & Holl); R. S. Bassler & B. Kellett, Geol . Soc. America, special

papers, no. 1, p. 193 (part), (1934).

Sleia troglodytophila n. sp. A. Martinsson, Bull. geol. Inst. Univ. Uppsala, vol. XLI,

p. 220, figs. 98B , 104A-C (1962).

Holotype: A ? RV, no. EW11, Institute of Palaeontology, University of Uppsala,

Sweden.

Type locality; The Wren's Nest, Dudley, Worcestershire, England; marl within the

Wenlock Limestone. Approx, long. 2°05'W, lat. 52°30'N.

Explanation of Plate 1:27:146

Fig. 1, 2 RV, int. showing subcruminal morphology & hinge line. Figs. 2, 3, 2 RV : fig. 2,

ext. lat.; fig. 3, post.

Scale A (400 ym ; x54) , fig. 1; scale B (400 ym ; x52) , figs. 2, 3.

Stereo-Atlas of Ostracod Shells, 1:27:147 Sleia troglodytophila (3 of 4)

Figured specimens: Brit. Mus. (Nat. Hist.) Nos. 10 5805 ( 2 RV: Pi. 1:27:146, fig. 1),

10 5806 ( 2 RV: Pi. 1:27:146, figs. 2, 3), 10 5807 ( 2 LV: Pi. 1:27:148,

fig. 1) 10 5808 ( S' LV: Pi. 1:27:148, figs. 2-4). All specimens are

from the crest of the exposed ridge on the W side of the type locality;

Wenlock Limestone. Nat. Grid Ref.: SO 93569195. Coll, author, 1970.

Diagnosis: Sleia species with a very large calcarine tubercle in the female. The

velar edge on the crumina is divided into one shorter, straight,

anterior portion and one larger, posterior portion, the anterior half

of which is bent out from the posterior portion (after Martinsson 1962)

Remarks: The specimen figured by Jones & Holl 1886 (p. 350, pi. XII, fig,. 2) as

" Beyrichia Kloedeni var. granulata, Jones" (BM (NH) IN 52504) is here

considered conspecific with S * troglodytophila Martinsson, 1962. How-

ever there is little point in choosing this specimen (or any of the

other syntypes which would now be referred to many different species) as

the lectotype of "B. granulata Jones (in Jones & Holl) , 1886" as this

name is a junior primary homonym of Beyrichia granulata Hall, 1859.

There are at least five other British Sleia species (to be described) ;

S. troglodytophila is distinguishable, especially by its subcruminal

morphology (see "Diagnosis" above) . It is found in the Wenlock Limestone

of the W Midlands of England (e.g. Wren's Nest, Hurst Hill) and the

Welsh Borderlands (e.g. at Benthall Edge) .

Explanation of Plate 1:27:148

Fig. 1, 2 LV, hinge line. Figs. 2-4, <T LV : fig. 2, ext. vent, obi.; fig. 3, post.; fig. 4,

ext. lat.

Scale A (100 ym ; x80) , fig. 1; scale B (400 ym ; x52) , figs. 2-4.

Sleia troglodytophila (4 of 4)

Stereo-Atlas of Ostracod Shells, 1:27:146

Sleia troglodytophila (2 of 4)

Stereo-Atlas of Ostracod Shells, 1:27:148

Stereo-Atlas of Ostracod Shells, 1:28:149-152 (1973) Ilyocypris monstrifica (1 of 4)

595.337.12 (119.9) (425.42:162.002.52 + 569.4:161.035.32 + 478.9:161.028.47): 551.312

ON ILYOCYPRIS MONSTRIFICA (NORMAN)

by P. C. Sylvester-Bradley and E. K. Kempf

(University of Leicester , England , and University of Cologne, Germany)

Ilyocypris monstrifica (Norman, 1862)

Cypris monstrifica sp. nov. A. N. Norman, Ann. Mag. nat. Hist., ser. 3, vol. 9, p. 45,

pi. 3, figs. 4, 5 (1862).

Limnocythere monstrifica (Norman); G. S. Brady, Intellectual Observer, vol. 12, p. 121 (1867).

Ilyocypris gibba var. tuberculata Brady; K. Kertesz, Termeszetr. Fuz., vol. 16, pp. 114-121,

169-176, pi. 6 (1894) .

Ilyocyprois tuberculata Kertesz non Brady; L. Masi, Boll. Soc . zool . ital . , ser. 2, vol. 7,

!p. 261 (1906).

Ilyocypris ambigua sp. nov. A. G. Lowndes, Ann. Mag. nat. Hist., ser. 10, vol. 8, pp. 569-

571 (1931).

Ilyocypris hartmanni sp. nov. R. Lerner-Seggev, Israel J. Zool., vol. 17, pp. 123-128,

pis. D, E, figs. 15-29; pl.J, figs. 1-2; pi. K, fig. 7 (1968)

Ilyocypris monstrifica (Norman); K. G. McKenzie, Crustaceans, vol. 18, pp. 109, 110 (1970).

Ilyocypris monstrifica (Norman); A. L. Kovalenko, Akad. Nauk. Moldavia SSR , no. 4, 1972e,

pp. 65-67, fig. 1 (1972).

Explanation of Plate 1:28:150

Figs. 1-2, LV ext. lat. ; fig. 2 to show spines & setae & setal collars in normal pore

canals; fig. 3, RV ext. lat.

i Scale A (500 ym ; x88) , fig. 1 (specimen 725 ym long); scale B (50 ym ; x700) , fig. 2;

scale C (500 ym ; *87) , fig* 3 (specimen 775 ym long).

Stereo-Atlas of Ostracod Shells, 1:28:151 Ilyocypris monstrifica (3 of 4)

Lectotype:

Type locality:

Figured specimens:

Diagnosis:

Remarks:

(here designated) Brit. Mus. (Nat. Hist.) 1911.11.8M3402.

Canal, Fleckney, Leicestershire, England; Nat. Grid Ref.: SP 6593; long.

1°59'W, lat. 52°30'N. Shallow (maximum 3 m) , almost static, freshwater

(Sal. 0.2%n in 1973) , muddy bottom, weedy sides. Rec. Coll. August, 1856.

BM(NH) 1973. 306A (Pi. 1:28:150, figs. 1, 2); 1973.307 (Pi. 1:28:152, fig.

3), both coll, from type locality March, 1973 by P.C.S.B.; 1973.308

(Pi. 1:28:150, fig. 3) from Lake Tiberias, Israel, long. 35°E, lat. 32°N,

coll, by Lerner-Seggev from type locality of J. hartmanni ; 1972.2.1.10-11A

(Pi. 1:28:152, figs. 1, 2) from R. Dnestr, near Kishinev, Moldavia, USSR,

long. 28°50'E, lat. 47°0'N, coll. R. H. Bate (see Kovalenko 1972).

Finely reticulate, with two prominent conical processes tending to curve

towards post, on upper half of each valve, and two smaller conical

eminences below and between them. A further, lesser protuberance may

occur with varying strength between the more dorsal pair. Both ant. and

post, thirds decorated with about 40 spines, more or less cylindrical in

shape, very variable in length in different specimens, but always longer

and more prominent towards margins (Pi. 1:28:150, fig. 2).

Recent, widely distributed in freshwater lakes and rivers of Europe and

Asia; fossil, from Upper Pleistocene of Syria (see Kempf Z. Geomorph. ,

Supp. Bd. , 1973, in press). T. monstrifica is the senior subjective

synonym of the type-species of the nominal genus Ilyocyprois Masi, but

we believe this genus to be a synonym of Ilyocypris .

Explanation of Plate 1:28:152

Figs. 1-2, RV int. lat.; fig. 3, LV int. lat.

Scale A (500 ym ; *83), fig. 1 (specimen 750 ym long); scale B (100 ym ; *390) , fig. 2;

scale C (500 ym ; x79) # fig. 3 (specimen 800 ym long) .

Stereo-Atlas of Ostracod Shells, 1:29:153-160 (1973) Sylvestra posterobursa (1 of 8)

595.337.14 (118.213) (560:161.036.36): 551.351 + 552.513

ON SYLVESTRA POSTEROBURSA DORUK gen. et sp. nov..

by Neriman Doruk

(University of Leicester 3 England)

Genus SYLVESTRA gen. nov.

Type-species: Sylvestra posterobursa sp. nov.

Derivation of name: In honour of Prof. p. c. Sylvester-Bradlev .

Diagnosis: A genus of Leptocytherinae Hanai with a ventral "snap-knob" as in

Callistocy there , but differing from that genus in hinge and shape.

Hinge with median element of left valve reduced to two separated khobs,

one median and one anterior in position, underlying extension of

anterior element, which consists of a separate groove. Posterior element

a quadriloculate socket. Shape trapezoidal with prominent posteroventral

pouch.

Explanation of Plate 1:29:154

Fig. 1, ? RV, ext.; fig. 2, ? LV, ext.

Scale A (250 ym ; x144) , fig. 1; scale B (250 ym ; *138) , fig. 2.

Stereo-Atlas of Ostracod Shells, 1:29:155 Sylvestra posterobursa (3 of 8)

Sylvestra posterobursa sp. nov.

Brit. Mus. (Nat. Hist.) 10 5159, LV.

A road cutting about 2 km S of Com, Antakya (Turkey) . Approx, long.

36°15'E, lat. 36°02'N. Upper Miocene. Yellow sandstone with abundant

molluscan shell fragments and foraminifera. Presumed littoral.

Latin, "posterior pouch."

Brit. Mus. (Nat. Hist.) 10 5158 (RV: Pi. 1:29:154, fig. 1; Pi. 1:29

156, figs. 2, 3), 10 5159 (LV: PI. 1:29:154, fig. 2; Pi. 1:29:160,

fig. 1), 10 5160 (LV: Pi. 1:29:156, figs. 1, 4), 10 5166 (LV: Pi. 1:29:

158, figs. 1-3; Pi. 1:29:160, figs. 2-4). All the figured specimens are

from the type locality, 3 m from the base of the section.

Fossae in groups, 2 to about 8 in each group.

Sexual dimorphism: slight, males a little less high in the posterior.

Upper Miocene from several localities in Antakya region, Turkey.

Explanation of Plate 1:29:156

Fig. 1, ? LV, int.; fig. 2, ? RV, int.; fig. 3, snap-knob, RV; fig. 4, LV, int. muse. sc.

Scale A (250 ym ; x131) , fig. 1; scale B (250 ym ; *122) t fig. 2; scale C (50 ym ; *427) ,

fig. 3; scale D (100 ym ; *393) , fig. 4.

Holotype:

Type locality:

Derivation of name:

Figured specimens:

Diagnosis:

Remarks:

Distribution :

Sylvestra posterobursa (2 of 8)

Sylvestra posterobursa (4 of 8)

Stereo-Atlas of Ostracod Shells, 1:29:154

Stereo-Atlas of Ostracod Shells, 1:29:156

Stereo-Atlas of Ostracod Shells, 1:29:157 Sylvestra posterobursa (5 of 8)

Explanation of Plate 1:29:158

Fig. 1, ant. view of LV, ext.; fig. 2, obi. dors, view of LV; fig. 3, obi. vent, view of LV.

Scale A (100 ym ; xl89) , fig. 1; scale B (250 ym ; xl05) , figs. 2, 3.

Stereo-Atlas of Ostracod Shells, 1:29:159 Sylvestra posterobursa (7 of 8)

Explanation of Plate 1:29:160

Fig. 1, LV, ext. detail of surface; fig. 2, obi. ant. view of LV; fig. 3, obi. post, view

of LV; fig. 4, post, view of LV.

Scale A (20 ym ; ><945) , fig. 1; scale B (100 ym ; *136) , figs. 2, 3; scale C (100 ym ;

x210) , fig. 4.

Stereo-Atlas of Ostracod Shells, 1:29:160

Sylvestra posterobursa (8 of 8) :

Stereo-Atlas of Ostracod Shells, 1:29:158

Sylvestra posterobursa (6 of 8)

STEREO-ATLAS OF OSTRACOD SHELLS

Contents, Volume 1, Part 2

1:16:89-92 On Ckrysoey there paradisus', by N. Doruk (£0.30)

1:17:93-96 On Proeythereis torquata; by R. H. Benson (£0.30)

1:18:97-100 On Proeythereis iganderssoni; by R. H. Benson (£0.30)

1:19:101-108 On Pattersoneypris mieropccpillosa ; by R. H. Bate (£0.60)

1:20:109-116 On Mutilus retiformis ; by G. Ruggieri & P. C. Sylvester-Bradley (£0.60)

1:21:117-120 On Mutilus keigi\ by N. Doruk (£0.30)

1:22:121-124 On Mutilus eimbaeformis; by N. Doruk (£0.30)

1:23:125-128 On Mutilus freudenthali ; by N. Doruk (£0.30)

1:24:129-136 On Mutilus eonveccus ; by N. Doruk (£0.60)

1:25:137-140 On Mutilus speyeri ; by N. Doruk (£0.30)

1:26:141-144 On Mutilus albicans', by N. Doruk (£0.30)

1:27:145-148 On Sleia troglodytophila’, by David J. Siveter (£0.30)

1:28:149-152 On Ilyocypris monstrifica; by P.C. Sylvester-Bradley & E.K.Kempf (£0.30)

1:29:153-160 On Sylvestra posterobursa; by N. Doruk (£0.60)

Annual subscription to Vol. 1, 4 parts (1973) £7.50; Vol. 2 (1974) £10.00.

Price per part: £5.00.

Price per number: as shown above.

All prices include postage.

No trade discount is allowed on the subscription rate.

Orders should be addressed to: Department oft Geology, The University, Leicester, England.

All cheques should be made payable to the University of Leicester.