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 ... area is in no degree sunk or concave in form . The umbones are acute and sharp ... region and pass along the frontal face , gradually approaching the frontal ...
... umbonal half and near the anterior side ; they become flatter posteriorly ... area is in no degree sunk or concave in form . The umbones are acute and sharp ... region and pass along the frontal face , gradually approaching the frontal ...
Page 79
... area of attachment has very frequently a similar relation , in point of dimensions , to the whole fully - grown ... umbonal region . Other individuals , again , seem to have secured themselves to some less suitable or stable surface ...
... area of attachment has very frequently a similar relation , in point of dimensions , to the whole fully - grown ... umbonal region . Other individuals , again , seem to have secured themselves to some less suitable or stable surface ...
Page 81
... umbonal region is only feebly indicated , according to Dr. Stanton , who says that the lower valve is very thick and very convex , obscurely carinate , with the beak more or less twisted laterally , but not distinctly coiled . " It ...
... umbonal region is only feebly indicated , according to Dr. Stanton , who says that the lower valve is very thick and very convex , obscurely carinate , with the beak more or less twisted laterally , but not distinctly coiled . " It ...
Page 82
... umbonal region ; but it differs by the more marked carination of the larger valve . Remes has considered both the Chilian shell and Exogyra imbricata Krauss to be identical with Sowerby's Exogyra sinuata , but this is certainly an error ...
... umbonal region ; but it differs by the more marked carination of the larger valve . Remes has considered both the Chilian shell and Exogyra imbricata Krauss to be identical with Sowerby's Exogyra sinuata , but this is certainly an error ...
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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