Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 48
... obliquely crossing the growth lines - just as in the Oomia T. recurva - there can be little doubt about the position of this shell relative to the main divisions of the genus . Whether it is more closely allied to the group of T. v ...
... obliquely crossing the growth lines - just as in the Oomia T. recurva - there can be little doubt about the position of this shell relative to the main divisions of the genus . Whether it is more closely allied to the group of T. v ...
Page 71
... the frontal area , therefore , the ornaments are very obliquely crossed by the lines of accretion . Dimensions.— Greatest measurement radially from the umbo ... 64 mm The Invertebrate Fauna of the Uitenhage Series . 71.
... the frontal area , therefore , the ornaments are very obliquely crossed by the lines of accretion . Dimensions.— Greatest measurement radially from the umbo ... 64 mm The Invertebrate Fauna of the Uitenhage Series . 71.
Page 76
... obliquely elongated . There are further points of difference which it is unnecessary to recount . GENUS PINNA Linnæus . PINNA ATHERSTONI Sharpe . 1856. Pinna atherstoni D. Sharpe , Trans . Geol . Soc . Lond . , ser . 2 , vol . vii . , p ...
... obliquely elongated . There are further points of difference which it is unnecessary to recount . GENUS PINNA Linnæus . PINNA ATHERSTONI Sharpe . 1856. Pinna atherstoni D. Sharpe , Trans . Geol . Soc . Lond . , ser . 2 , vol . vii . , p ...
Page 82
... obliquely sloping posterior margin , which is only very slightly convex in outline until the posterior end of the valve is reached . In profile , the antero - ventral margin is straight , passing from the acutely pointed umbo to the ...
... obliquely sloping posterior margin , which is only very slightly convex in outline until the posterior end of the valve is reached . In profile , the antero - ventral margin is straight , passing from the acutely pointed umbo to the ...
Page 83
... obliquely running ridges of accretion . Traces of the narrow , elongated , fossilised ligament have been observed . Dimensions.— Length of the antero - ventral margin Length of the cardinal margin ... Greatest breadth of flank between ...
... obliquely running ridges of accretion . Traces of the narrow , elongated , fossilised ligament have been observed . Dimensions.— Length of the antero - ventral margin Length of the cardinal margin ... Greatest breadth of flank between ...
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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