Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 306
... strong umbilical tubercles , strong lateral tubercles and strong ventral clavi occur , all connected by prominent ribs . On the adult outer whorls the section becomes rounded and ornament subdued . Examples are NMB D1271 ( macroconch ) ...
... strong umbilical tubercles , strong lateral tubercles and strong ventral clavi occur , all connected by prominent ribs . On the adult outer whorls the section becomes rounded and ornament subdued . Examples are NMB D1271 ( macroconch ) ...
Page 405
... strong pointed tubercles , one large , blunt , flat and latero - external disappearing on the body chamber ; the external region bears strong , elongate tubercles in two parallel rows and alternating . But here : the umbilical tubercles ...
... strong pointed tubercles , one large , blunt , flat and latero - external disappearing on the body chamber ; the external region bears strong , elongate tubercles in two parallel rows and alternating . But here : the umbilical tubercles ...
Page 406
... strong spinose umbilical tubercles and strong ventrolateral tubercles joined by different patterns of ribbing ; suture somewhat poorly developed placenticeratan type . Age Cenomanian - Turonian Remarks As compared to other members of ...
... strong spinose umbilical tubercles and strong ventrolateral tubercles joined by different patterns of ribbing ; suture somewhat poorly developed placenticeratan type . Age Cenomanian - Turonian Remarks As compared to other members of ...
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Common terms and phrases
adult adventive lobe Albian ammonites Atlantic Benson body chamber bottom depth Campanian Cape Town catch rates Cenomanian Central Asia Chiplonkar & Ghare compressed Coniacian continental diameter Diaphus dimorphism distribution Engonoceratidae fauna flanks genus Group holotype Hoplitoplacenticeras Hulley Hyatt Hypengonoceras decaryi Collignon Iljin intraspecific variation isobath Karamaites Kennedy & Wright Klinger Lampanyctodes hectoris lanternfish lateral lobe lateral ornament lateral tubercles Maastrichtian Macroconch Madagascar Marine Metaplacenticeras Michailova Microconch with type myctophid oceanic ontogenetic changes ontogeny Orange Shelf ostracod Parengonoceras Paulcke pelagic phragmocone Placenticeras kaffrarium Etheridge Placenticeras polyopsis Placenticeratidae polyopsis Dujardin Proplacenticeras pseudoceanic ribs saddle Santonian separated Shannon shell smooth South African Museum south-western Africa southern Benguela region Spath specimens specimens.h¹ stage stations subkaffrarium sutural ontogeny suture suture line SW Cape temperature text-fig Turonian Type species umbilical tubercles umbilicus umkwelanense Upper Albian Upper Campanian Upper Cretaceous upwelling venter ventral clavi Whatley whorl section Wiedmann Zululand