Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 17
... anterior view of both valves . The 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 ...
... anterior view of both valves . The 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 ...
Page 66
... anterior ear is the only portion which retains the shell wholly preserved ; the remainder of the valve is for the most part in the form of a cast . Here and there , where some of the inner layers of the shell are adhering to the cast ...
... anterior ear is the only portion which retains the shell wholly preserved ; the remainder of the valve is for the most part in the form of a cast . Here and there , where some of the inner layers of the shell are adhering to the cast ...
Page 71
... 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 near the anterior side ; they become flatter posteriorly and inferiorly . Anteriorly ...
... 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 near the anterior side ; they become flatter posteriorly and inferiorly . Anteriorly ...
Page 72
... anteriorly little - produced outline ; the anterior and ter- minal position of the umbones ; the great reduction of the anterior ear and the imperfectly demarcated posterior ear . The fine linear * Phillips ( 1 ) , p . 116 , pl . vii ...
... anteriorly little - produced outline ; the anterior and ter- minal position of the umbones ; the great reduction of the anterior ear and the imperfectly demarcated posterior ear . The fine linear * Phillips ( 1 ) , p . 116 , pl . vii ...
Page 73
... anterior area and the extension of linear ornaments over the whole flank . Matheron's figure shows a distinctly developed projecting anterior * Stoliczka ( 2 ) , pp . 413–415 . Fischer ( 1 ) , p . 941 ( 1886 ) . || E. Philippi ( 1 ) ...
... anterior area and the extension of linear ornaments over the whole flank . Matheron's figure shows a distinctly developed projecting anterior * Stoliczka ( 2 ) , pp . 413–415 . Fischer ( 1 ) , p . 941 ( 1886 ) . || E. Philippi ( 1 ) ...
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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