Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 42
... border , and which plainly exhibits a gaping habit . We do not find further aids to comparison amongst the few Oomia Mollusca which have already been described , and a detailed account of the remaining lamellibranchs collected by Wynne ...
... border , and which plainly exhibits a gaping habit . We do not find further aids to comparison amongst the few Oomia Mollusca which have already been described , and a detailed account of the remaining lamellibranchs collected by Wynne ...
Page 71
... border passes at its lower end by a somewhat sudden curve into the rounded inferior border . The valves are most convex in the umbonal half and near the anterior side ; they become flatter posteriorly and inferiorly . Anteriorly , the ...
... border passes at its lower end by a somewhat sudden curve into the rounded inferior border . The valves are most convex in the umbonal half and near the anterior side ; they become flatter posteriorly and inferiorly . Anteriorly , the ...
Page 74
... border , but L. tenuitesta has the linear striæ of the surface more numerous and closely crowded at a given distance from the umbonal apex . SUB - GENUS MANTELLUM J. F. Bolten . LIMA ( MANTELLUM ) NEGLECTA Tate . Plate II . , figs . 8 ...
... border , but L. tenuitesta has the linear striæ of the surface more numerous and closely crowded at a given distance from the umbonal apex . SUB - GENUS MANTELLUM J. F. Bolten . LIMA ( MANTELLUM ) NEGLECTA Tate . Plate II . , figs . 8 ...
Page 75
... border is more narrowed , and the fine linear rib in the interspace between the main ribs is lacking . GENUS PERNA J. G. Bruguière . PERNA ATHERSTONI Sharpe . Plate II . , fig . 9 . 1856. Perna atherstoni D. Sharpe , Trans . Geol . Soc ...
... border is more narrowed , and the fine linear rib in the interspace between the main ribs is lacking . GENUS PERNA J. G. Bruguière . PERNA ATHERSTONI Sharpe . Plate II . , fig . 9 . 1856. Perna atherstoni D. Sharpe , Trans . Geol . Soc ...
Page 76
... border , restored by a dotted line , should in reality have been represented as a rounded curve similar to that followed by the outline of the same part in Perna mytiloides Lam . , and should not have been drawn in the angular or sub ...
... border , restored by a dotted line , should in reality have been represented as a rounded curve similar to that followed by the outline of the same part in Perna mytiloides Lam . , and should not have been drawn in the angular or sub ...
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Common terms and phrases
Acanthodiscus adult Ammonites angle aperture Aptian Astarte atherstoni Sharpe baini bank of Sunday's bone breadth Broom carinal characters closely Coega collection comparison conocardiiformis convex costate Cutch Cynodonts d'Orbigny developed diameter dorsal elongated Eriphyla escutcheon Exogyra fauna figure flank flattened fossils frontal genus Geol Geological German East Africa Graaff-Reinet groove Hauterivian height herzogi Holcostephanus holubi imbricata Jurassic keel Kitchin Krauss left valve length less Lower Cretaceous Lycett margin Massospondylus narrow Neocomian Neumayr occur Oolitic Oomia beds ornamentation outline Pareiasaurus Pavlow Pecten Plate posterior posteriorly preserved represented resemblance ribs ridges right valve Rogers and Schwarz rogersi sculpture shell similar slightly South African Museum species specimen spiral stage Stoliczka stowi Sunday's River surface suture Tate Tate's transverse Trigonia Trigonia ventricosa tubercles Uhlig Uitenhage Uitenhage beds Uitenhage Series umbilical umbilicus umbo umbonal region upper W. T. Blanford whorl zoarium Zwartkop's River