Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 256
... showing distinct ontogenetic changes from ' umkwelanense ' through ' subkaffrarium ' to adult ' kaffrarium ' B Fig . 14. Placenticeras kaffrarium Etheridge , 1904. SAS. stage . x 0,7 . Fig . 21. The holotype of Placenticeras ...
... showing distinct ontogenetic changes from ' umkwelanense ' through ' subkaffrarium ' to adult ' kaffrarium ' B Fig . 14. Placenticeras kaffrarium Etheridge , 1904. SAS. stage . x 0,7 . Fig . 21. The holotype of Placenticeras ...
Page 276
... showing successive ontogenetic changes from rounded inner whorls , though ' umkwelanense ' and ' subkaffrarium ' stages to type 6 ' kaffrarium ' ornament . x 1 . A B C Fig . 25. Placenticeras kaffrarium Etheridge , 1904. 276 ANNALS OF ...
... showing successive ontogenetic changes from rounded inner whorls , though ' umkwelanense ' and ' subkaffrarium ' stages to type 6 ' kaffrarium ' ornament . x 1 . A B C Fig . 25. Placenticeras kaffrarium Etheridge , 1904. 276 ANNALS OF ...
Page 281
... showing transition from smooth ' umkwelanense ' stage to ' subkaffrarium ' stage with umbilical tubercles and ventral clavi . x 1 . different rates , and stages are of different length in different individuals , or may be omitted . This ...
... showing transition from smooth ' umkwelanense ' stage to ' subkaffrarium ' stage with umbilical tubercles and ventral clavi . x 1 . different rates , and stages are of different length in different individuals , or may be omitted . This ...
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