Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 16
... valve . Natural size . FIG . 4. - Perna , sp . Left valve . In- ternal cast of part near the umbo and of part of the ligamental area . Natural size . OSTREA ( EXOGYRA ) , sp . Text - figure 3 . There are two right valves which resemble ...
... valve . Natural size . FIG . 4. - Perna , sp . Left valve . In- ternal cast of part near the umbo and of part of the ligamental area . Natural size . OSTREA ( EXOGYRA ) , sp . Text - figure 3 . There are two right valves which resemble ...
Page 17
... Left valve and anterior view of both valves . The posterior and the ventral margins are imperfect . × 3 . The largest specimen has a height of about 150 mm . , and its hinge- line is about 85 mm . long . One example shows the cast of ...
... Left valve and anterior view of both valves . The posterior and the ventral margins are imperfect . × 3 . The largest specimen has a height of about 150 mm . , and its hinge- line is about 85 mm . long . One example shows the cast of ...
Page 64
... left side of the Coega Valley , half a mile down from the railway ( 458g , on Trigonia holubi ) . Another example is attached to a valve of Exogyra imbricata from the Sunday's River ( 303 ) , belonging to the collection of the South ...
... left side of the Coega Valley , half a mile down from the railway ( 458g , on Trigonia holubi ) . Another example is attached to a valve of Exogyra imbricata from the Sunday's River ( 303 ) , belonging to the collection of the South ...
Page 65
... valve figured by Mr. Woods in pl . xxvii . , fig . 11 of his monograph ( see above ) . The other specimen appears smooth to the naked eye , but shows minute and delicate , faint concentric markings under the lens . This represents a left ...
... valve figured by Mr. Woods in pl . xxvii . , fig . 11 of his monograph ( see above ) . The other specimen appears smooth to the naked eye , but shows minute and delicate , faint concentric markings under the lens . This represents a left ...
Page 67
... valve and below this be examined under slight magnification and with favourable illumina- tion , it is seen that the ... left valve the anterior ear is large and rectangular , the posterior ear small . This valve has a rather more ...
... valve and below this be examined under slight magnification and with favourable illumina- tion , it is seen that the ... left valve the anterior ear is large and rectangular , the posterior ear small . This valve has a rather more ...
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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