Annals of the South African Museum, Volume 110The Museum, 2003 - Natural history |
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Page 119
... umbilical shoulder and midflank , and the degree of inflation varies from individual to individual . Due to allometric growth , the umbilical ratio increases with ontogeny , and the venter of macroconchs rounds in later growth ...
... umbilical shoulder and midflank , and the degree of inflation varies from individual to individual . Due to allometric growth , the umbilical ratio increases with ontogeny , and the venter of macroconchs rounds in later growth ...
Page 131
... umbilical shoulder . The flanks are relatively broad and , probably , were almost flat . Ornament comprises primary ribs that begin at the umbilical seam and pass backwards to the umbilical shoulder where they terminate in about 20 ...
... umbilical shoulder . The flanks are relatively broad and , probably , were almost flat . Ornament comprises primary ribs that begin at the umbilical seam and pass backwards to the umbilical shoulder where they terminate in about 20 ...
Page 133
... umbilical seam and pass backwards to the umbilical shoulder where they form bullae of variable strength ; on SAM - PCA1942 there are conspicuous umbilical spines whereas SAM - PCA1896 and 1911 display irregular tubercle development ...
... umbilical seam and pass backwards to the umbilical shoulder where they form bullae of variable strength ; on SAM - PCA1942 there are conspicuous umbilical spines whereas SAM - PCA1896 and 1911 display irregular tubercle development ...
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Common terms and phrases
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