Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 385
... Cenomanian - Turonian of India . Placenticeras bobkovae Iljin , 1975 ( p . 169 , pl . 31 ( fig . 1 ) , pl . 35 ( fig . 12 ) ) . San- tonian of Central Asia . Placenticeras canaliculatum Hyatt , 1903 ( p . 243 ) . Lower Campanian of ...
... Cenomanian - Turonian of India . Placenticeras bobkovae Iljin , 1975 ( p . 169 , pl . 31 ( fig . 1 ) , pl . 35 ( fig . 12 ) ) . San- tonian of Central Asia . Placenticeras canaliculatum Hyatt , 1903 ( p . 243 ) . Lower Campanian of ...
Page 406
... Cenomanian - Turonian Remarks As compared to other members of the subfamily Baghiceratinae , this genus has less developed suture . It differs from Placenticeras ( its tumid species ) also by having three rows of tubercles and the ...
... Cenomanian - Turonian Remarks As compared to other members of the subfamily Baghiceratinae , this genus has less developed suture . It differs from Placenticeras ( its tumid species ) also by having three rows of tubercles and the ...
Page 407
Age Cenomanian to Turonian Remarks As exemplified by the type species the cross - section varies with stages of shell growth from compressed to circular with venter flattish narrow to broad feebly convex . Suture of typically ...
Age Cenomanian to Turonian Remarks As exemplified by the type species the cross - section varies with stages of shell growth from compressed to circular with venter flattish narrow to broad feebly convex . Suture of typically ...
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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