Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 401
... side are up to six lobes , of which the dorsal is the most prominent . The transformation of the first umbilical lobe takes place by formation , at the beginning , on its exterior and subsequently on the inner side of the notches ...
... side are up to six lobes , of which the dorsal is the most prominent . The transformation of the first umbilical lobe takes place by formation , at the beginning , on its exterior and subsequently on the inner side of the notches ...
Page 402
... side . The lobes originating in the area of the umbilicus , either undergo double division or remain undivided and shift on to the external or internal side . Comparison Of Kopetdagites gen . n . , is characterized by the structure of ...
... side . The lobes originating in the area of the umbilicus , either undergo double division or remain undivided and shift on to the external or internal side . Comparison Of Kopetdagites gen . n . , is characterized by the structure of ...
Page 404
... side is flat as distinct from the pointed or strongly rounded one of the genus Cleoniceras Parona & Bonarelli . The suture line of Anaplacenticeras gen . n . has more massive lobes and narrower saddles . In Cleoniceras Parona ...
... side is flat as distinct from the pointed or strongly rounded one of the genus Cleoniceras Parona & Bonarelli . The suture line of Anaplacenticeras gen . n . has more massive lobes and narrower saddles . In Cleoniceras Parona ...
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