Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 76
... inflated anteriorly , and is more obliquely elongated . There are further points of difference which it is unnecessary to recount . GENUS PINNA Linnæus . PINNA ATHERSTONI Sharpe . 1856. Pinna atherstoni D. Sharpe , Trans . Geol . Soc ...
... inflated anteriorly , and is more obliquely elongated . There are further points of difference which it is unnecessary to recount . GENUS PINNA Linnæus . PINNA ATHERSTONI Sharpe . 1856. Pinna atherstoni D. Sharpe , Trans . Geol . Soc ...
Page 87
... inflated . The cardinal margin slopes down forwards from the umbo with a gently convex outline , and passes by a curve into the rather short anterior margin . The posterior margin falls steeply from the umbo and passes by a rather sharp ...
... inflated . The cardinal margin slopes down forwards from the umbo with a gently convex outline , and passes by a curve into the rather short anterior margin . The posterior margin falls steeply from the umbo and passes by a rather sharp ...
Page 91
... inflated form . Unio subsinuata Koch and Dunker , from the Wealden of North Germany , is in some respects similar , notably in the form of the posterior half of the shell and the position of the umbones , but differs markedly in the ...
... inflated form . Unio subsinuata Koch and Dunker , from the Wealden of North Germany , is in some respects similar , notably in the form of the posterior half of the shell and the position of the umbones , but differs markedly in the ...
Page 93
... inflated , and to be of relatively more elongated form . T. delafossei Bayle and Coquand , ** from the Neocomian of Chili , also shows a general agreement with T. ventricosa , and may * King ( 1 ) , p . 229 ; Feistmantel ( 2 ) , p . 164 ...
... inflated , and to be of relatively more elongated form . T. delafossei Bayle and Coquand , ** from the Neocomian of Chili , also shows a general agreement with T. ventricosa , and may * King ( 1 ) , p . 229 ; Feistmantel ( 2 ) , p . 164 ...
Page 94
... inflated umbonal region , the extreme incurva- tion of the umbones , the relatively very narrow area and the crenulation of the shell margin , are characters which are conspicu- ously developed in these well - marked and specialised ...
... inflated umbonal region , the extreme incurva- tion of the umbones , the relatively very narrow area and the crenulation of the shell margin , are characters which are conspicu- ously developed in these well - marked and specialised ...
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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