Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 292
... smooth ' umkwelanense ' stage and remains smooth throughout . At the end of the adult phragmocone , and on the body chamber , however , the venter becomes distinctly rounded , albeit very narrow in extreme cases , without an ...
... smooth ' umkwelanense ' stage and remains smooth throughout . At the end of the adult phragmocone , and on the body chamber , however , the venter becomes distinctly rounded , albeit very narrow in extreme cases , without an ...
Page 305
... smooth to tuberculate to rounded and smooth , or directly from flat and smooth to rounded and smooth without an intermediate tuberculate stage . Examples are SAS Z1520g ( macro- conch ) and NMB D1269 ( macroconch , Fig . 56 ) . These ...
... smooth to tuberculate to rounded and smooth , or directly from flat and smooth to rounded and smooth without an intermediate tuberculate stage . Examples are SAS Z1520g ( macro- conch ) and NMB D1269 ( macroconch , Fig . 56 ) . These ...
Page 363
... smooth . What is noteworthy , is that the saddles in the suture line are by no means as pincer - like as in the type species ( Fig . 17 ) . In fact , were it not known that the species occurs in the Albian , it could be regarded as a ...
... smooth . What is noteworthy , is that the saddles in the suture line are by no means as pincer - like as in the type species ( Fig . 17 ) . In fact , were it not known that the species occurs in the Albian , it could be regarded as a ...
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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