Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 258
... specimens . In immature phragmocones one is never sure if differences in ornamentation are due to simple intraspecific variation or because specimens are at a different ontogenetic stage . In the Zululand specimens very conspicuous ...
... specimens . In immature phragmocones one is never sure if differences in ornamentation are due to simple intraspecific variation or because specimens are at a different ontogenetic stage . In the Zululand specimens very conspicuous ...
Page 292
... specimens to illustrate variation . A. NMB D1150 , ' kaffrarium ' type . B. NMB D1150 , ' sub - kaffrarium ' type . C. NMB D1343 , ' umkwelanense ' type . C ( c ) In some forms with smooth ' umkwelanense ' type ornament on the phragmo ...
... specimens to illustrate variation . A. NMB D1150 , ' kaffrarium ' type . B. NMB D1150 , ' sub - kaffrarium ' type . C. NMB D1343 , ' umkwelanense ' type . C ( c ) In some forms with smooth ' umkwelanense ' type ornament on the phragmo ...
Page 339
... specimens , both from the same locality as the specimens in Figures 86 and 87 to illustrate effects of intraspecific variation on whorl section . × 1 . E Lv LM 10 لله Ev Fig . 89. Placenticeras kaffrarium Etheridge , 1904. SAS Z1442 ...
... specimens , both from the same locality as the specimens in Figures 86 and 87 to illustrate effects of intraspecific variation on whorl section . × 1 . E Lv LM 10 لله Ev Fig . 89. Placenticeras kaffrarium Etheridge , 1904. SAS Z1442 ...
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