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 . x 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 . x 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 49
... anterior varices . The differences in the sculpture pointed out by Dr. Stanton appear to be less emphasised when this Patagonian form is brought into comparison with the large and more coarsely ornamented T. kraussi sp . nov . , which ...
... anterior varices . The differences in the sculpture pointed out by Dr. Stanton appear to be less emphasised when this Patagonian form is brought into comparison with the large and more coarsely ornamented T. kraussi sp . nov . , which ...
Page 67
... anterior ear is large and rectangular , the posterior ear small . This valve has a rather more equilateral aspect than the right valve , which is sometimes very markedly inequilateral . Dimensions.- ( 1 ) ( 2 ) ( 3 ) Height 13 19 Length ...
... anterior ear is large and rectangular , the posterior ear small . This valve has a rather more equilateral aspect than the right valve , which is sometimes very markedly inequilateral . Dimensions.- ( 1 ) ( 2 ) ( 3 ) Height 13 19 Length ...
Page 71
... 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 near the anterior side ; they become ...
... 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 near the anterior side ; they become ...
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 ...
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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