Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 247
... Middle to early / late phragmocone stage . Here the whorl section becomes more inflated and rounded , the umbilical shoulder becomes more rounded , and umbilical tubercles may be connected by single or bifurcating ribs of varying ...
... Middle to early / late phragmocone stage . Here the whorl section becomes more inflated and rounded , the umbilical shoulder becomes more rounded , and umbilical tubercles may be connected by single or bifurcating ribs of varying ...
Page 253
... ( Middle Cenomanian ) placenticeratids are already strongly dimorphic . Karamaites gros- souvrei ( Semenov , 1899 ) , which may reach diameters of up to half a metre , and the very closely allied if not conspecific Karamaites ...
... ( Middle Cenomanian ) placenticeratids are already strongly dimorphic . Karamaites gros- souvrei ( Semenov , 1899 ) , which may reach diameters of up to half a metre , and the very closely allied if not conspecific Karamaites ...
Page 344
... Middle and Upper Turonian of Madagascar under the names Proplacenticeras memoriae- schloenbachi Laube & Bruder var ... Middle and Upper Coniacian . Collignon's Lower and Middle Coniacian zones of Peroniceras dravidicum and P ...
... Middle and Upper Turonian of Madagascar under the names Proplacenticeras memoriae- schloenbachi Laube & Bruder var ... Middle and Upper Coniacian . Collignon's Lower and Middle Coniacian zones of Peroniceras dravidicum and P ...
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