Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 3
... surface and the elongation of the apertures were due to the angle between the surface and the direction of the zoĆcia at that level . It is possible that in M. Hyselyi the direction of the zoccia would be perpendicular to the surface ...
... surface and the elongation of the apertures were due to the angle between the surface and the direction of the zoĆcia at that level . It is possible that in M. Hyselyi the direction of the zoccia would be perpendicular to the surface ...
Page 15
... surface ( G ) ; E , F , two dorsal valves . All x 3 . The thin median septum is joined by a short branch on each side near the cardinal margin . This valve is deeper and less curved than in most examples of Thecidea vermicularis ...
... surface ( G ) ; E , F , two dorsal valves . All x 3 . The thin median septum is joined by a short branch on each side near the cardinal margin . This valve is deeper and less curved than in most examples of Thecidea vermicularis ...
Page 64
... surface of the tube is occasionally marked by irregular annular thickenings . Mr. Rogers collected specimens from the Cliff on Buck Kraal , Sunday's River , attached to Trigonia herzogi ( 122h ) , and at the left side of the Coega ...
... surface of the tube is occasionally marked by irregular annular thickenings . Mr. Rogers collected specimens from the Cliff on Buck Kraal , Sunday's River , attached to Trigonia herzogi ( 122h ) , and at the left side of the Coega ...
Page 65
... surface - a character by which it may be recognised as a right valve . With the exception of its imperfect preservation in the umbonal region and its somewhat smaller dimen- sions , this specimen agrees very perfectly with the right ...
... surface - a character by which it may be recognised as a right valve . With the exception of its imperfect preservation in the umbonal region and its somewhat smaller dimen- sions , this specimen agrees very perfectly with the right ...
Page 66
... surface sculpture , for the faint folds are too broad to correspond with the concentric surface markings which are exhibited by European specimens . The specimen agrees with P. cottaldinus in all characters of proportion and outline ...
... surface sculpture , for the faint folds are too broad to correspond with the concentric surface markings which are exhibited by European specimens . The specimen agrees with P. cottaldinus in all characters of proportion and outline ...
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Common terms and phrases
Acanthodiscus adult Ammonites angle aperture Aptian Astarte atherstoni Sharpe bank of Sunday's bone Broom carinal characters closely Coega collection comparison conocardiiformis convex Cutch Cynodonts d'Orbigny developed diameter Dicynodon differs distal dorsal Dunbrodie elongated Eriphyla escutcheon Exogyra fauna figured flank flattened fossils frontal genus Geol Geological Graaff-Reinet greatest groove Gryponyx Hauterivian height herzogi Holcostephanus holubi imbricata Jurassic keel Kitchin Krauss left valve length less Lower Cretaceous Lycett Lystrosaurus margin Massospondylus narrow Neocomian Neumayr occur ornamentation outline Pareiasaurus Pavlow Pecten phalanx Plate posterior posteriorly preserved probably represented resemblance ribs ridges Right valve Rogers and Schwarz sculpture Seeley shell similar slightly South African Museum species specimen spiral stage Stoliczka Sunday's River surface suture Tate Tate's transverse Trigonia Trigonia ventricosa tubercles Uhlig Uitenhage Uitenhage beds Uitenhage Series uitenhagensis sp umbilical umbo umbonal region upper W. T. Blanford whorl zoarium Zwartkop's River