Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 16
... umbo and of part of the ligamental area . Natural size . OSTREA ( EXOGYRA ) , sp . Text - figure 3 . There are two right valves which resemble O. ( Exogyra ) Langloisi , Coquand , from the Senonian ( Santonian ) of Algeria and Tunis ...
... umbo and of part of the ligamental area . Natural size . OSTREA ( EXOGYRA ) , sp . Text - figure 3 . There are two right valves which resemble O. ( Exogyra ) Langloisi , Coquand , from the Senonian ( Santonian ) of Algeria and Tunis ...
Page 18
... - graphica , lii . , 1906 ) , p . 234 , pl . xvii . NOTE ON THE LOCALITY . These fossils were obtained by. the flattened part of the shell extending ventrally from the umbo is similar in both species . 18 Annals of the South African Museum ...
... - graphica , lii . , 1906 ) , p . 234 , pl . xvii . NOTE ON THE LOCALITY . These fossils were obtained by. the flattened part of the shell extending ventrally from the umbo is similar in both species . 18 Annals of the South African Museum ...
Page 71
... umbo , gradually diverging until , at a distance of 40 mm . from the umbo , they may be separated by interspaces 2 mm . broad . At a distance exceeding 30 mm . from the umbo , these lines are almost or quite absent from the middle part ...
... umbo , gradually diverging until , at a distance of 40 mm . from the umbo , they may be separated by interspaces 2 mm . broad . At a distance exceeding 30 mm . from the umbo , these lines are almost or quite absent from the middle part ...
Page 72
South African Museum. Dimensions.— Greatest measurement radially from the umbo ... 64 mm . Greatest length measurement , at right angles to the last Greatest depth of a single valve .... 40 ,, 10 ,, Occurrence . Railway cutting between ...
South African Museum. Dimensions.— Greatest measurement radially from the umbo ... 64 mm . Greatest length measurement , at right angles to the last Greatest depth of a single valve .... 40 ,, 10 ,, Occurrence . Railway cutting between ...
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 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