Annals of the South African Museum, Volume 110The Museum, 2003 - Natural history |
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Page 137
34 ( figs 4-5 ) ) differs from the present species in the loss of ventrolateral spines beyond about 50 mm diameter . Gauthiericeras fauremuretae Collignon ( 1967 : 50 , pl . 28 ( fig . 10 ) ) may be a Prionocycloceras ; it differs from ...
34 ( figs 4-5 ) ) differs from the present species in the loss of ventrolateral spines beyond about 50 mm diameter . Gauthiericeras fauremuretae Collignon ( 1967 : 50 , pl . 28 ( fig . 10 ) ) may be a Prionocycloceras ; it differs from ...
Page 229
The umbilical width increases with growth , but even at the largest preserved diameter , is still less than half the diameter of the whorls . SAM - PCZ18709 ( Fig . 63F ) represents the earliest growth stage available , at a whorl ...
The umbilical width increases with growth , but even at the largest preserved diameter , is still less than half the diameter of the whorls . SAM - PCZ18709 ( Fig . 63F ) represents the earliest growth stage available , at a whorl ...
Page 253
On the second whorl , at a spiral diameter of c . 18 mm , spinose siphonal tubercles appear in the umbilical suture , either from single or from paired ribs their tips resting on the adapical shoulder of the succeeding whorl .
On the second whorl , at a spiral diameter of c . 18 mm , spinose siphonal tubercles appear in the umbilical suture , either from single or from paired ribs their tips resting on the adapical shoulder of the succeeding whorl .
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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 |