Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 163
... suture falls at the bluntly angular margin of the whorls , so that the general figure of the shell in profile is that of a cone with little excavation at the sutural depressions and inconspicuous convexity of the outline between these ...
... suture falls at the bluntly angular margin of the whorls , so that the general figure of the shell in profile is that of a cone with little excavation at the sutural depressions and inconspicuous convexity of the outline between these ...
Page 164
... suture . The outer side of the whorl is truncated , with a sharp and * Zittel ( 4 ) , p . 337 , Taf . 50 , figs . 5 , 6 . Stanton ( 3 ) , p . 29 , pl . vii . , figs . 1 , 2 . prominently projecting longitudinal ( spiral ) keel limiting ...
... suture . The outer side of the whorl is truncated , with a sharp and * Zittel ( 4 ) , p . 337 , Taf . 50 , figs . 5 , 6 . Stanton ( 3 ) , p . 29 , pl . vii . , figs . 1 , 2 . prominently projecting longitudinal ( spiral ) keel limiting ...
Page 165
... suture is situated on the lower marginal keel of the whorls . The mouth has an angular outer lip , corresponding with the form of the whorls . The outer margin of the aperture is thin and sharp ; under the columella the margin is ...
... suture is situated on the lower marginal keel of the whorls . The mouth has an angular outer lip , corresponding with the form of the whorls . The outer margin of the aperture is thin and sharp ; under the columella the margin is ...
Page 167
... suture , terminating abruptly at a prominent marginal keel which marks the upper limit of the outer truncated face of the whorl . This truncated portion is straight in profile in the earlier whorls , but becomes gently but distinctly ...
... suture , terminating abruptly at a prominent marginal keel which marks the upper limit of the outer truncated face of the whorl . This truncated portion is straight in profile in the earlier whorls , but becomes gently but distinctly ...
Page 168
... suture , but vertically truncated at the periphery . The truncated marginal band * Zittel ( 4 ) , p . 321 , pl . xlviii . , fig . 10 . is bounded above and below by a prominent longitudinal ( 168 Annals of the South African Museum .
... suture , but vertically truncated at the periphery . The truncated marginal band * Zittel ( 4 ) , p . 321 , pl . xlviii . , fig . 10 . is bounded above and below by a prominent longitudinal ( 168 Annals of the South African Museum .
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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