Annals of the South African Museum, Volume 110The Museum, 2003 - Natural history |
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Page 119
Shell typically placenticeratid , high - whorled , discoidal and very involute , with 90 per cent of the preceding whorl covered . The narrow funnel - like umbilicus ( about 13 per cent of the shell diameter ) has a steeply sloping ...
Shell typically placenticeratid , high - whorled , discoidal and very involute , with 90 per cent of the preceding whorl covered . The narrow funnel - like umbilicus ( about 13 per cent of the shell diameter ) has a steeply sloping ...
Page 130
Measurements Specimen Description The shell is poorly preserved due to erosion of one flank and the venter . What remains , however , suggests a fairly evolute , compressed shell with about 30 per cent of the penultimate whorl covered .
Measurements Specimen Description The shell is poorly preserved due to erosion of one flank and the venter . What remains , however , suggests a fairly evolute , compressed shell with about 30 per cent of the penultimate whorl covered .
Page 203
This suggests that coiling of the adult shell may have been in an open , elliptical criocone . An elliptical crioconic shell is also consistent with the taphonomy of the species . With no contact between the successive coils , the shell ...
This suggests that coiling of the adult shell may have been in an open , elliptical criocone . An elliptical crioconic shell is also consistent with the taphonomy of the species . With no contact between the successive coils , the shell ...
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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 |