Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 262
... lateral lobe is in direct contrast to the trifid division of the same lobe in the Hoplitaceae . Soon afterwards a lobe arises in the lateral saddle E / L ( Ruzhentsev V / U ) , which is designated L by Mirzoev and Michailova , i.e. ...
... lateral lobe is in direct contrast to the trifid division of the same lobe in the Hoplitaceae . Soon afterwards a lobe arises in the lateral saddle E / L ( Ruzhentsev V / U ) , which is designated L by Mirzoev and Michailova , i.e. ...
Page 264
... 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 criterion for separating genera in the Placenti- ceratidae . We lack material for ...
... 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 criterion for separating genera in the Placenti- ceratidae . We lack material for ...
Page 357
... lateral lobe remains more or less symmetrically trifid and independent , and the first lateral saddle ( E / L ) entire . In forms where placenticeratid features dominate , i.e. , typically compressed whorl section and involute coiling ...
... lateral lobe remains more or less symmetrically trifid and independent , and the first lateral saddle ( E / L ) entire . In forms where placenticeratid features dominate , i.e. , typically compressed whorl section and involute coiling ...
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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.hı 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