Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 262
... adult sutural formula : E L U2 U3 ( U4 = S ) U1vU1d I ( Wedekind ) . Less easy to interpret ( and reconcile ) are : division of the lateral lobe L ( Ruzhentsev U ) ; division of the saddle E / L ( Ruzhentsev V / U ) ; and , division of ...
... adult sutural formula : E L U2 U3 ( U4 = S ) U1vU1d I ( Wedekind ) . Less easy to interpret ( and reconcile ) are : division of the lateral lobe L ( Ruzhentsev U ) ; division of the saddle E / L ( Ruzhentsev V / U ) ; and , division of ...
Page 292
... adult phragmocone or on the adult body chamber . Again , there is considerable variation in the whorl section , as in type 1. NMB D941 / 33 ( macroconch ) ( Fig . 47 ) and SAS Z1065c ( microconch ) ( Fig . 48 ) are good examples ( also ...
... adult phragmocone or on the adult body chamber . Again , there is considerable variation in the whorl section , as in type 1. NMB D941 / 33 ( macroconch ) ( Fig . 47 ) and SAS Z1065c ( microconch ) ( Fig . 48 ) are good examples ( also ...
Page 357
... adult stage — the position of the clavi changing from alternating to only slightly offset . Another apparent differ- ence seems to be that a smooth Placenticeras juvenile stage has never been found in Hoplitoplacenticeras . Also , as ...
... adult stage — the position of the clavi changing from alternating to only slightly offset . Another apparent differ- ence seems to be that a smooth Placenticeras juvenile stage has never been found in Hoplitoplacenticeras . Also , as ...
Contents
List of species referred to Placenticeratidae | 384 |
Acknowledgements | 391 |
241 | 393 |
Copyright | |
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Common terms and phrases
9 figs adult adventive lobe Albian ammonite Anaplacenticeras body chamber Campanian of Germany Cenomanian Cenomanian of Central Cenomanian-Turonian of India Central Asia Chiplonkar & Ghare Cobban Collignon 1965a compressed Coniacian diameter dimorphism Engonoceratidae flanks forms fritschi de Grossouvre genus Gissarites Grossouvre Hengestites holotype Hoplitidae Hoplitoplacenticeras Hypengonoceras decaryi Collignon Iljin incision India Chiplonkar intraspecific variation Karamaites Kennedy & Wright Klinger Knemiceras Kopetdagites Kossmat lateral lobe lateral ornament lateral tubercles lectotype Luppov Maastrichtian Macroconch Madagascar Metaplacenticeras Michailova Microconch with type ontogenetic ontogenetic changes ontogenetic stage Parengonoceras Paulcke phragmocone Placenticeras fritschi Placenticeras kaffrarium Etheridge Placenticeras polyopsis Dujardin Placenticeras syrtale Morton Placenticeratidae Proplacenticeras Reeside ribs rounded Ruzhentsev Santonian Santonian of France scaphitoid uncoiling Schlüter shell Spath Stantonoceras subkaffrarium sutural ontogeny suture line text-fig ticeras Turonian type 4 ornament Type species umbilical edge umbilical tubercles umbilical wall umbilicus Upper Albian Upper Campanian Upper Cretaceous ventral clavi whorl section Wiedmann Zululand