Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 6
... adult zoarium over its greater extent has the characters of I. calypso , d'Orbigny , while these are confined to the proximal parts of an adult zoarium of C. cenomana . Distribution of both C. cenomana and I. calypso . CRISINA EXCAVATA ...
... adult zoarium over its greater extent has the characters of I. calypso , d'Orbigny , while these are confined to the proximal parts of an adult zoarium of C. cenomana . Distribution of both C. cenomana and I. calypso . CRISINA EXCAVATA ...
Page 36
... adult characters displayed by this peculiar form , while a study of the young shell does not plainly reveal its affinities . A general comparison , how- ever , shows that this Trigonia differs from the Jurassic Clavellatæ in a manner ...
... adult characters displayed by this peculiar form , while a study of the young shell does not plainly reveal its affinities . A general comparison , how- ever , shows that this Trigonia differs from the Jurassic Clavellatæ in a manner ...
Page 41
... adult , more closely approaches an undescribed Uitenhage form which is associated with T. vau . This is T. stowi , described in these pages , and it is certainly closely allied to T. vau ; the youthful characters of shape and ornament ...
... adult , more closely approaches an undescribed Uitenhage form which is associated with T. vau . This is T. stowi , described in these pages , and it is certainly closely allied to T. vau ; the youthful characters of shape and ornament ...
Page 42
South African Museum. similarity in the adult stage in members of these two groups , however peculiar and striking may be the characters which appear to unite them , and at the same time to differentiate them from all other sections of ...
South African Museum. similarity in the adult stage in members of these two groups , however peculiar and striking may be the characters which appear to unite them , and at the same time to differentiate them from all other sections of ...
Page 44
... adult stage of T. peninsularis Coq . , from the Aptian of Spain , shows an analogous obliteration of sectional features which was regarded by Lycett to indicate degeneracy . The Waagen ( 1 ) , p . 233 ( 1875 ) . * value of Trigonia ...
... adult stage of T. peninsularis Coq . , from the Aptian of Spain , shows an analogous obliteration of sectional features which was regarded by Lycett to indicate degeneracy . The Waagen ( 1 ) , p . 233 ( 1875 ) . * value of Trigonia ...
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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