Annals of the South African Museum, Volume 7, Part 2South African Museum, 1898 - Natural history |
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Page 86
... directed obliquely backwards , and before the lateral fold is reached they bifurcate , at the same time curving sharply with the convexity back- wardly directed . An occasional extra , curved rib is here intercalated . Just below the ...
... directed obliquely backwards , and before the lateral fold is reached they bifurcate , at the same time curving sharply with the convexity back- wardly directed . An occasional extra , curved rib is here intercalated . Just below the ...
Page 103
... directed anteriorly at their lower ends , while the corresponding ribs of T. herzogi are backwardly directed and are not curved . On the area of T. mamillata , the rows of more or less isolated nodes become united to form smooth ...
... directed anteriorly at their lower ends , while the corresponding ribs of T. herzogi are backwardly directed and are not curved . On the area of T. mamillata , the rows of more or less isolated nodes become united to form smooth ...
Page 121
... directed to form an acute angle with the valve - border . The longitudinal linear groove of the area which becomes so marked a feature in the adult , is only faintly indicated at the close of the neanic stage . As the succeeding growth ...
... directed to form an acute angle with the valve - border . The longitudinal linear groove of the area which becomes so marked a feature in the adult , is only faintly indicated at the close of the neanic stage . As the succeeding growth ...
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Common terms and phrases
Acanthodiscus Ammonites angle anteriorly aperture Aptian Astarte atherstoni Sharpe baini Sharpe bank of Sunday's Belemnites carinal characters closely Coega Coega Valley collection comparison conocardiiformis convex costate Cutch d'Orb d'Orbigny delicate developed Dimensions Dunbrodie elongated Eriphyla escutcheon Exogyra fauna figured flank flattened fossils frontal genus Geol German East Africa Graaff-Reinet groove Hauterivian height herzogi Holcostephanus holubi inflated Jurassic keel Krauss last whorl left valve less Lower Cretaceous Lycett margin Marine Beds Müller narrow Neocomian Neumayr occur Oolitic Oomia beds ornamentation outline Pavlow Pecten posterior posteriorly railway relatively represent resemblance ribs ridges right valve Rogers and Schwarz sculpture shell similar South African Museum Sowerby species specimen spiral Stoliczka stowi strata Sunday's River surface suture Tate Tate's transverse Trigonia Trigonia ventricosa tubercles Uhlig Uitenhage beds Uitenhage Series uitenhagensis sp umbilical umbilicus umbo umbonal region upper W. T. Blanford whorl Zwartkop's River