Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 65
... umbonal region and its somewhat smaller dimen- sions , this specimen agrees very perfectly with the right valve figured by Mr. Woods in pl . xxvii . , fig . 11 of his monograph ( see above ) . The other specimen appears smooth to the ...
... umbonal region and its somewhat smaller dimen- sions , this specimen agrees very perfectly with the right valve figured by Mr. Woods in pl . xxvii . , fig . 11 of his monograph ( see above ) . The other specimen appears smooth to the ...
Page 71
... umbonal half and near the anterior side ; they become flatter posteriorly and inferiorly . Anteriorly , the flank passes abruptly , though without marked cari- nation , into an extensive , flat frontal face , truncating the shell . This ...
... umbonal half and near the anterior side ; they become flatter posteriorly and inferiorly . Anteriorly , the flank passes abruptly , though without marked cari- nation , into an extensive , flat frontal face , truncating the shell . This ...
Page 74
... umbonal apex . SUB - GENUS MANTELLUM J. F. Bolten . LIMA ( MANTELLUM ) NEGLECTA Tate . Plate II . , figs . 8 , 8a . 1867. Lima neglecta R. Tate , Quart . Journ . Geol . Soc . , vol . xxiii . , p . 156 , pl . vii . , figs . 4a , 4b ...
... umbonal apex . SUB - GENUS MANTELLUM J. F. Bolten . LIMA ( MANTELLUM ) NEGLECTA Tate . Plate II . , figs . 8 , 8a . 1867. Lima neglecta R. Tate , Quart . Journ . Geol . Soc . , vol . xxiii . , p . 156 , pl . vii . , figs . 4a , 4b ...
Page 75
... umbonal apex , has a broad in- dentation or inward curve in profile , somewhat more strongly developed than in the original of Sharpe's figure 4. Other specimens which I have examined exhibit this feature in less degree , and it appears ...
... umbonal apex , has a broad in- dentation or inward curve in profile , somewhat more strongly developed than in the original of Sharpe's figure 4. Other specimens which I have examined exhibit this feature in less degree , and it appears ...
Page 76
... umbo , is marked off from a small , flattened , marginal portion of the valve between the fold and the antero - inferior margin near the umbonal end , in clearer manner as a rule than is depicted in Sharpe's figure . In this respect the ...
... umbo , is marked off from a small , flattened , marginal portion of the valve between the fold and the antero - inferior margin near the umbonal end , in clearer manner as a rule than is depicted in Sharpe's figure . In this respect the ...
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Common terms and phrases
Acanthodiscus adult Ammonites angle aperture Aptian Astarte atherstoni Sharpe bank of Sunday's bone Broom carinal characters closely Coega collection comparison conocardiiformis convex Cutch Cynodonts d'Orbigny developed diameter Dicynodon differs distal dorsal Dunbrodie elongated Eriphyla escutcheon Exogyra fauna figured flank flattened fossils frontal genus Geol Geological Graaff-Reinet greatest groove Gryponyx Hauterivian height herzogi Holcostephanus holubi imbricata Jurassic keel Kitchin Krauss left valve length less Lower Cretaceous Lycett Lystrosaurus margin Massospondylus narrow Neocomian Neumayr occur ornamentation outline Pareiasaurus Pavlow Pecten phalanx Plate posterior posteriorly preserved probably represented resemblance ribs ridges Right valve Rogers and Schwarz sculpture Seeley shell similar slightly South African Museum species specimen spiral stage Stoliczka Sunday's River surface suture Tate Tate's transverse Trigonia Trigonia ventricosa tubercles Uhlig Uitenhage Uitenhage beds Uitenhage Series uitenhagensis sp umbilical umbo umbonal region upper W. T. Blanford whorl zoarium Zwartkop's River