Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 17
... 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 the ligament area and grooves . This species ...
... 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 the ligament area and grooves . This species ...
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 66
... posterior margin . It probably stands in relation to shell structure and not to surface sculpture , for the faint folds are too broad to correspond with the concentric surface markings which are exhibited by European specimens . The ...
... posterior margin . It probably stands in relation to shell structure and not to surface sculpture , for the faint folds are too broad to correspond with the concentric surface markings which are exhibited by European specimens . The ...
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 , t 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 , t 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 ...
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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