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
1st phalanx Ammonites angle aperture Aptian articular Astarte atherstoni Sharpe baini bank of Sunday's bone Broom carinal characters closely Coega collection comparison convex Cutch Cynodonts Cynognathus d'Orbigny Dicynodon differs distal dorsal dorsal fin elongated Exogyra fauna figured flank flattened fossils front frontal genus Geol Geological Graaff-Reinet greatest Gryponyx Hauterivian height herzogi Holcostephanus humerus imbricata Jurassic keel Krauss Left valve length Lower Cretaceous Lystrosaurus margin Massospondylus maxilla measures narrow Neocomian Neumayr occur Oomia ornamentation outline Pareiasaurus Pecten phalanx Plate portion posterior posteriorly preserved probably Propappus represented resemblance ribs ridges Right valve Rogers and Schwarz rogersi sculpture Seeley shell side similar skull slightly South African Museum species specimen Sunday's River surface suture Tate transverse Trigonia tubercles Uhlig Uitenhage Uitenhage beds Uitenhage Series uitenhagensis sp umbilical umbo umbonal region upper ventricosa W. T. Blanford whorl width zoarium Zwartkop's River