. Bulletin of the British Museum (Natural History), Geology. OSTRACODS OF EAST AFRICA 203. 0125mm Fig. 17. Rliadinocythere gracilis sp. nov. Anterior duplicature with vestibule and marginal pore canals, right valve, paratype Holotype. , carapace, sample B223 (PI. 10, fig. 14). Paratypes. , sample B223. Horizon and Locality. Middle or Upper Kimmeridgian, samples B219 and B223, Mandawa Anticline (Text-fig. 3). Description. Carapace oval, highest at anterior end ; slender in dorsal or ventral view. Shell surface finely punctate ; additional ornamentation consisting of thr
. Bulletin of the British Museum (Natural History), Geology. OSTRACODS OF EAST AFRICA 203. 0125mm Fig. 17. Rliadinocythere gracilis sp. nov. Anterior duplicature with vestibule and marginal pore canals, right valve, paratype Holotype. , carapace, sample B223 (PI. 10, fig. 14). Paratypes. , sample B223. Horizon and Locality. Middle or Upper Kimmeridgian, samples B219 and B223, Mandawa Anticline (Text-fig. 3). Description. Carapace oval, highest at anterior end ; slender in dorsal or ventral view. Shell surface finely punctate ; additional ornamentation consisting of three primary lateral ridges extending for the greater part of the length of the valve and having two subordinate ridges interleaved in the anterior half. Hinge lophodont with long median element. Muscle scars not seen. Anterior duplicature broad with distinct vestibule (Text-fig. 17). Marginal pore canals few in number and straight (Text-fig. 17). Dimensions. Holotype, , carapace (PL 10, fig. 14), length 0-41 mm ; height 0-21 mm ; width 0-14 mm. Paratypes: , carapace (PL 11, fig. 4), length 0-37 mm ; height 0-17 mm ; width 0-12 mm. , carapace (PL io, fig. 11), length 0-38 mm ; height 0-18 mm ; width o-n mm. , right valve (PL io, fig. 13 ; PL 11, figs 1, 2), length 0-38 mm ; height 0-18 mm. , left valve (PL 10, fig. 12), length 0-38 mm ; height o-ig mm. , carapace (PL n, fig. 3), length 0-34 mm ; height 0-17 mm ; width 0-12 mm. Discussion. No ostracod comparable at either generic or specific level is known from the Mesozoic around the Indian Ocean. From its size and rather delicate shell structure Rhadinocythere gracilis sp. nov. was most probably a phytal Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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