Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 264
... lobes in the former , as compared to a mere , albeit large , incision of the lateral saddle E / L in the latter . The lobe in the saddle L / U2 ( fourth lateral lobe ) , termed U1n by Michailova ( 1974 , 1978 ) , has been used as a ...
... lobes in the former , as compared to a mere , albeit large , incision of the lateral saddle E / L in the latter . The lobe in the saddle L / U2 ( fourth lateral lobe ) , termed U1n by Michailova ( 1974 , 1978 ) , has been used as a ...
Page 400
... lobe is always slanted towards the second . The fourth lobe is very small , smaller by far than the fifth lobe . The transformation of the first umbilical lobe comes about by means of formation at its base , and later on the inner sides ...
... lobe is always slanted towards the second . The fourth lobe is very small , smaller by far than the fifth lobe . The transformation of the first umbilical lobe comes about by means of formation at its base , and later on the inner sides ...
Page 401
fourth lobe is small and weakly developed . The fifth lobe is significantly larger than the fourth and somewhat larger than the sixth . The first saddle is always lower than the second . On the inner side are up to six lobes , of which ...
fourth lobe is small and weakly developed . The fifth lobe is significantly larger than the fourth and somewhat larger than the sixth . The first saddle is always lower than the second . On the inner side are up to six lobes , of which ...
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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