Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 47
... posterior elongation , with absence of sculpture from the area and the posterior part of the flank in the adult shell , in which also the area has ceased to be demarcated from the flank . An Astarte from the Oomia Trigonia - beds ...
... posterior elongation , with absence of sculpture from the area and the posterior part of the flank in the adult shell , in which also the area has ceased to be demarcated from the flank . An Astarte from the Oomia Trigonia - beds ...
Page 71
... posterior outline is gently rounded , the anterior profile straight . The straight anterior border passes at its lower end by a somewhat sudden curve into the rounded inferior border . The valves are most convex in the umbonal half and ...
... posterior outline is gently rounded , the anterior profile straight . The straight anterior border passes at its lower end by a somewhat sudden curve into the rounded inferior border . The valves are most convex in the umbonal half and ...
Page 72
... posterior ears . L. ovalis , more oblique and anteriorly produced , with minutely delicate and crowded linear ornaments , can scarcely be brought into close comparison . Lima obliquissima in reality may be most closely compared with ...
... posterior ears . L. ovalis , more oblique and anteriorly produced , with minutely delicate and crowded linear ornaments , can scarcely be brought into close comparison . Lima obliquissima in reality may be most closely compared with ...
Page 73
... posterior cardinal expansion of the flank . A Neocomian shell having great resemblance in form to L. obliquis- sima is Lima undata ( Desh . ) Leym . , but it is distinguished by its longer hinge - line and stronger ornaments . In the ...
... posterior cardinal expansion of the flank . A Neocomian shell having great resemblance in form to L. obliquis- sima is Lima undata ( Desh . ) Leym . , but it is distinguished by its longer hinge - line and stronger ornaments . In the ...
Page 82
... 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 posterior angle of ...
... 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 posterior angle of ...
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Common terms and phrases
1st phalanx Ammonites angle aperture Aptian articular Astarte atherstoni Sharpe baini bank of Sunday's bone Broom carinal characters closely Coega collection comparison convex Cutch Cynodonts Cynognathus d'Orbigny Dicynodon differs distal dorsal dorsal fin elongated Exogyra fauna figured flank flattened fossils front frontal genus Geol Geological Graaff-Reinet greatest Gryponyx Hauterivian height herzogi Holcostephanus humerus imbricata Jurassic keel Krauss Left valve length Lower Cretaceous Lystrosaurus margin Massospondylus maxilla measures narrow Neocomian Neumayr occur Oomia ornamentation outline Pareiasaurus Pecten phalanx Plate portion posterior posteriorly preserved probably Propappus represented resemblance ribs ridges Right valve Rogers and Schwarz rogersi sculpture Seeley shell side similar skull slightly South African Museum species specimen Sunday's River surface suture Tate transverse Trigonia tubercles Uhlig Uitenhage Uitenhage beds Uitenhage Series uitenhagensis sp umbilical umbo umbonal region upper ventricosa W. T. Blanford whorl width zoarium Zwartkop's River