Annals of the South African Museum, Volume 110The Museum, 2003 - Natural history |
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Page 51
The presacral ribs are poorly known . BMNH R3592 includes one fairly complete cervical rib ( Fig . 28A ) and some additional fragments . The shaft of the cervical rib is short , laterally compressed but slightly concavo - convex , and ...
The presacral ribs are poorly known . BMNH R3592 includes one fairly complete cervical rib ( Fig . 28A ) and some additional fragments . The shaft of the cervical rib is short , laterally compressed but slightly concavo - convex , and ...
Page 131
... ribs . There are about 50 ribs on the outer whorl , with 14 ribs per 6 umbilical bullae ; ribbing weakens slightly on the adoral part of the outer whorl . Each rib is ornamented with paired clavi on the ventrolateral shoulder . Towards ...
... ribs . There are about 50 ribs on the outer whorl , with 14 ribs per 6 umbilical bullae ; ribbing weakens slightly on the adoral part of the outer whorl . Each rib is ornamented with paired clavi on the ventrolateral shoulder . Towards ...
Page 253
... rib density has increased to about 80. On the outer whorl , rib density is about 100 to 120. The majority of ribs are single , but some are bifurcate on the inner third of the adapical edge . Another specimen , SAM - PCZ10489a and b ...
... rib density has increased to about 80. On the outer whorl , rib density is about 100 to 120. The majority of ribs are single , but some are bifurcate on the inner third of the adapical edge . Another specimen , SAM - PCZ10489a and b ...
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ammonites Angola Annals archosaurs articulates Baculites Berkeley BMNH body chamber Campanian Cape Town caudal vertebrae centrum Charig coiling compressed Coniacian constrictions Cooper Cretaceous ammonites Damesites dentary diameter Didymoceras Diplomoceras Diplomoceras cylindraceum Defrance dorsal edge Erythrosuchus africanus Broom Eubostrychoceras fauna fenestra Figure flanks foramen fossils fragments gardeni Baily Garjainia genus Geological Géologique Gisement Glyptoxoceras Hauericeras holotype Howarth Huene Hyatt Hypophylloceras incomplete intercentra internal moulds Jimbo kaffrarium Kennedy & Cobban Klinger & Kennedy Kossmat Kossmaticeras KwaZulu Lateral view locality lower Campanian Maastrichtian Madagascar material Matsumoto maxilla medial views Mesopuzosia Morrowites Neocrioceras Neoglyptoxoceras Nostoceras Nostoceras Bostrychoceras Ochev ornament Paleontology phragmocone Placenticeras posterior posteriorly posteroventral premaxilla Prionocycloceras proterosuchids ribs Santonian São Nicolau shaft skull roof South African Museum Spath specimens St Lucia Formation Stoliczka Superfamily suture Tetragonites Texanites text-fig Turonian Type species umbilicus UNIVERSITY OF CALIFORNIA Upper Cretaceous venter ventral views ventrolateral tubercles whorl height whorl section