Annals of the South African Museum, Volume 110The Museum, 2003 - Natural history |
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Page 95
The whorl section is subovate , compressed ( H / W = 1.36 ) , with a narrow evenly arched venter and weakly convex flanks which converge slightly towards the venter . Maximum width is one - third of the way up the flank .
The whorl section is subovate , compressed ( H / W = 1.36 ) , with a narrow evenly arched venter and weakly convex flanks which converge slightly towards the venter . Maximum width is one - third of the way up the flank .
Page 107
The dorsum is evenly rounded and the relatively flat flanks converge slightly to the evenly rounded venter . ... SAM - PCA1733 lacks flank tubercles at a whorl height of 7 mm , whereas in SAM - PCA1808 they are present at only 5.4 mm ...
The dorsum is evenly rounded and the relatively flat flanks converge slightly to the evenly rounded venter . ... SAM - PCA1733 lacks flank tubercles at a whorl height of 7 mm , whereas in SAM - PCA1808 they are present at only 5.4 mm ...
Page 110
The flanks are almost flat , with maximum width at about midflank , and the whorl section is oval compressed ( H / W = 1.25 ) . The evenly rounded venter shows a very weak , low siphonal keel . The test is smooth and lacks ornament .
The flanks are almost flat , with maximum width at about midflank , and the whorl section is oval compressed ( H / W = 1.25 ) . The evenly rounded venter shows a very weak , low siphonal keel . The test is smooth and lacks ornament .
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Common terms and phrases
ammonites Angola Annals anterior arch archosaurs articulates base become BMNH body chamber Broom Campanian Cape caudal vertebrae closely Cobban coiling collections Collignon complete compressed Coniacian consists constrictions Cooper Cretaceous cylindraceum described Description diameter differs Diplomoceras Discussion distal dorsal early edge elements Erythrosuchus africanus Eubostrychoceras example fauna Figure flanks fossils fragments genus Geological Gower History holotype Howarth incomplete Kennedy Klinger known KwaZulu Lateral view LIBRARY locality lower Maastrichtian Madagascar material Matsumoto maxilla medial Middle narrow Natural occurrence original ornament Paleontology phragmocone position possibly posterior present preserved probably proximal referred represented ribs rounded Santonian shaft shell shows similar single skull slightly Society South African Museum Spath species specimens St Lucia Formation suggests surface suture text-fig tubercles Turonian Type species umbilical Upper Upper Cretaceous venter ventral ventrolateral vertebrae whorl whorl section
Bibliographic information
| Title | Annals of the South African Museum, Volume 110 Annals of the South African Museum, South African Museum |
| Contributor | South African Museum |
| Publisher | The Museum, 2003 |
| Original from | University of California, Berkeley |
| Digitized | 26 Jan 2016 |
| Export Citation | BiBTeX EndNote RefMan |