Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 278
... late phragmocone stage . Here , the whorl section becomes more inflated and rounded , the umbilical shoulder also becomes more rounded , umbilical tubercles of varying strength , c . 7-8 per whorl develop , connected by single or ...
... late phragmocone stage . Here , the whorl section becomes more inflated and rounded , the umbilical shoulder also becomes more rounded , umbilical tubercles of varying strength , c . 7-8 per whorl develop , connected by single or ...
Page 292
... late stage . There is considerable variation in the whorl section , ranging from extremely compressed , subtrigonal with flat flanks converging to a narrow venter , e.g. SAM - PCZ6197 / a ( macroconch ) ( Figs 40-41 ) to broadly rounded ...
... late stage . There is considerable variation in the whorl section , ranging from extremely compressed , subtrigonal with flat flanks converging to a narrow venter , e.g. SAM - PCZ6197 / a ( macroconch ) ( Figs 40-41 ) to broadly rounded ...
Page 393
... Late Cretaceous ammonite Hoplitoplacenticeras in Wyoming . Professional Papers . United States Geological Survey 475 – C : C60 – C62 . COBBAN , W. A. 1969. The Late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis ...
... Late Cretaceous ammonite Hoplitoplacenticeras in Wyoming . Professional Papers . United States Geological Survey 475 – C : C60 – C62 . COBBAN , W. A. 1969. The Late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis ...
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