Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 13
... ( either very slightly or not at all crenulate ) , with a large areola , and a few small tubercles and granules around the margin . The primary tubercles are largest at the ambitus , and smaller on the dorsal surface ( 13 )
... ( either very slightly or not at all crenulate ) , with a large areola , and a few small tubercles and granules around the margin . The primary tubercles are largest at the ambitus , and smaller on the dorsal surface ( 13 )
Page 14
... margin of the area . Peristome of moderate size . FIG . 1. Coptosoma capense , sp . nov . X 2 . The bigeminal pores extending from the peristome almost to the margin of the base seem to distinguish this from other species of Coptosoma ...
... margin of the area . Peristome of moderate size . FIG . 1. Coptosoma capense , sp . nov . X 2 . The bigeminal pores extending from the peristome almost to the margin of the base seem to distinguish this from other species of Coptosoma ...
Page 15
... margin of the valve . In the interior of the valve are narrow longitudinal ridges . A E B F C G Ꭰ FIG . 2. - Thecidea ( Lacazella ) , sp . A , B , C , three views of the same specimen ; D , G , a ventral valve seen from the cardinal ...
... margin of the valve . In the interior of the valve are narrow longitudinal ridges . A E B F C G Ꭰ FIG . 2. - Thecidea ( Lacazella ) , sp . A , B , C , three views of the same specimen ; D , G , a ventral valve seen from the cardinal ...
Page 16
... margin . The internal margin is ornamented with ridges . From the median septum one or sometimes more branches come off on each side . Several examples of this species were found by Mr. Lang when searching for Polyzoa in the broken - up ...
... margin . The internal margin is ornamented with ridges . From the median septum one or sometimes more branches come off on each side . Several examples of this species were found by Mr. Lang when searching for Polyzoa in the broken - up ...
Page 17
... 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 resembles P. valida ( Stoliczka ) ...
... 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 resembles P. valida ( Stoliczka ) ...
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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