Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 264
... genus Parengonoceras Spath , 1924 ( of Engonocera- tidae ) , the sutures are finely incised , and morphological transitions to the genus Hypengonoceras ( of Placenticeratidae as interpreted by Kennedy & Wright ( 1983 ) ) occur , as ...
... genus Parengonoceras Spath , 1924 ( of Engonocera- tidae ) , the sutures are finely incised , and morphological transitions to the genus Hypengonoceras ( of Placenticeratidae as interpreted by Kennedy & Wright ( 1983 ) ) occur , as ...
Page 406
... genus Diplacmoceras it differs in not having pinched ear - like ventral clavi and ventrolateral tubercles . The genus Hoplitoplacenticeras differs from the present genus in having typically trapezoidal cross - section and by outward ...
... genus Diplacmoceras it differs in not having pinched ear - like ventral clavi and ventrolateral tubercles . The genus Hoplitoplacenticeras differs from the present genus in having typically trapezoidal cross - section and by outward ...
Page 438
... genus ( now known from Eocene to Recent ) . Despite the fact that Whatley et al . ( 1986 ) described one species with distinct but non - functional ocular structures ( P. ocularis Whatley et al . 1986 ) , all records of the genus to ...
... genus ( now known from Eocene to Recent ) . Despite the fact that Whatley et al . ( 1986 ) described one species with distinct but non - functional ocular structures ( P. ocularis Whatley et al . 1986 ) , all records of the genus to ...
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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