Annals of the South African Museum, Volume 110The Museum, 2003 - Natural history |
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Page 119
The narrow funnel - like umbilicus ( about 13 per cent of the shell diameter ) has a steeply sloping , flat umbilical wall that grades into the subrounded shoulder . Broad , moderately convex flanks converge markedly to the narrow ...
The narrow funnel - like umbilicus ( about 13 per cent of the shell diameter ) has a steeply sloping , flat umbilical wall that grades into the subrounded shoulder . Broad , moderately convex flanks converge markedly to the narrow ...
Page 133
cent of the shell diameter ) , and with a steep , narrow umbilical wall and subrounded umbilical shoulder . The flanks are relatively broad and , probably , were almost flat . Ornament comprises primary ribs that begin at the umbilical ...
cent of the shell diameter ) , and with a steep , narrow umbilical wall and subrounded umbilical shoulder . The flanks are relatively broad and , probably , were almost flat . Ornament comprises primary ribs that begin at the umbilical ...
Page 135
The flat flanks are subparallel and the broad venter is flattened in costal section , resulting in a subquadrate , compressed whorl section ( H / W = 1.13-1.42 ) . Ornament is variable . Ribs begin at the umbilical seam and pass ...
The flat flanks are subparallel and the broad venter is flattened in costal section , resulting in a subquadrate , compressed whorl section ( H / W = 1.13-1.42 ) . Ornament is variable . Ribs begin at the umbilical seam and pass ...
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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 |