Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 20
... front view of the right - hand series only , and those of the left - hand are seen in profile ( p . 412 ) . 7. Crisina marginata ( d'Orbigny ) . × 12. Obverse face of part of a zoarium viewed rather from the right side , so that only ...
... front view of the right - hand series only , and those of the left - hand are seen in profile ( p . 412 ) . 7. Crisina marginata ( d'Orbigny ) . × 12. Obverse face of part of a zoarium viewed rather from the right side , so that only ...
Page 82
... front , and antero - ventrally truncated . The hinge - margin is straight , and passes backwardly by a curve into the obliquely sloping posterior margin , which is only very slightly convex in outline until the posterior end of the ...
... front , and antero - ventrally truncated . The hinge - margin is straight , and passes backwardly by a curve into the obliquely sloping posterior margin , which is only very slightly convex in outline until the posterior end of the ...
Page 90
... front of the umbo passes by a curve into the rather short , convex anterior border . The posterior margin merges into the upper margin and slopes obliquely back , to pass by an abrupt curve into the inferior margin . The greatest height ...
... front of the umbo passes by a curve into the rather short , convex anterior border . The posterior margin merges into the upper margin and slopes obliquely back , to pass by an abrupt curve into the inferior margin . The greatest height ...
Page 91
... front of the umbones . Unio voltzi Koch and Dunker , § though regarded by those authors as distinct from the last , differs in similar manner from Unio uitenhagensis . Unio planus Roem . is more compressed in form and has a less sloping ...
... front of the umbones . Unio voltzi Koch and Dunker , § though regarded by those authors as distinct from the last , differs in similar manner from Unio uitenhagensis . Unio planus Roem . is more compressed in form and has a less sloping ...
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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