Annals of the South African Museum, Volume 110The Museum, 2003 - Natural history |
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Page 223
... Discussion Two subgenera are here referred to Eubostrychoceras , E. ( Eubostrychoceras ) and E. ( Amapondella ) Klinger & Kennedy 1997. Eubostrychoceras ( Eubostrychoceras ) may have heterostrophic or hamitid to ptychoceratitid early ...
... Discussion Two subgenera are here referred to Eubostrychoceras , E. ( Eubostrychoceras ) and E. ( Amapondella ) Klinger & Kennedy 1997. Eubostrychoceras ( Eubostrychoceras ) may have heterostrophic or hamitid to ptychoceratitid early ...
Page 315
Discussion Even though this species is represented by a single specimen only , the unique mode of ornamentation consisting of sets of three tubercles arranged in order of increasing size clearly distinguishes N. ( N. ) annelisae from ...
Discussion Even though this species is represented by a single specimen only , the unique mode of ornamentation consisting of sets of three tubercles arranged in order of increasing size clearly distinguishes N. ( N. ) annelisae from ...
Page 324
... Discussion Hollow spines are rarely preserved in heteromorphs . These may be quite variable , but are generally pointed and sealed off from the rest of the shell by a convex septum . Spatulate spines that are somewhat similar to those ...
... Discussion Hollow spines are rarely preserved in heteromorphs . These may be quite variable , but are generally pointed and sealed off from the rest of the shell by a convex septum . Spatulate spines that are somewhat similar to those ...
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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