Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 292
... ( macroconch ) ( Figs 40-41 ) to broadly rounded ovoid , e.g. SAM - PCZ6202 ( macroconch ) and NMB D1151 / 5 ( microconch ) ( Figs 42–43 ) ( also Figs 44-46B ) . Type 2. In this form the greater part of the phragmocone remains smooth ...
... ( macroconch ) ( Figs 40-41 ) to broadly rounded ovoid , e.g. SAM - PCZ6202 ( macroconch ) and NMB D1151 / 5 ( microconch ) ( Figs 42–43 ) ( also Figs 44-46B ) . Type 2. In this form the greater part of the phragmocone remains smooth ...
Page 306
... ( macroconch ) , SAS Z202 ( macroconch ) ( Figs 57-58 ) , NMB D941 / 2 ( micro- conch ) ( Fig . 59 ) , NMB D1267 ( microconch ) ( Figs 60-61 ) , SAM - PCZ6196 ( microconch ) ( Figs 62-63 ) , and NMB D925 / 3 ( macroconch ) ( Figs 64-65 ) ...
... ( macroconch ) , SAS Z202 ( macroconch ) ( Figs 57-58 ) , NMB D941 / 2 ( micro- conch ) ( Fig . 59 ) , NMB D1267 ( microconch ) ( Figs 60-61 ) , SAM - PCZ6196 ( microconch ) ( Figs 62-63 ) , and NMB D925 / 3 ( macroconch ) ( Figs 64-65 ) ...
Page 307
... ( macroconch ) ( Figs 76–77 ) , Z1021 ( macroconch ) ( Fig . 78 ) , Z187 ( microconch ) ( Fig . 79 ) ( see also Figs 80-81 ) . Type 7. A few specimens , e.g. PCZ6215 ( Fig . 82 ) show a very strong increase in ornament , passing rapidly ...
... ( macroconch ) ( Figs 76–77 ) , Z1021 ( macroconch ) ( Fig . 78 ) , Z187 ( microconch ) ( Fig . 79 ) ( see also Figs 80-81 ) . Type 7. A few specimens , e.g. PCZ6215 ( Fig . 82 ) show a very strong increase in ornament , passing rapidly ...
Contents
List of species referred to Placenticeratidae | 384 |
Acknowledgements | 391 |
241 | 393 |
Copyright | |
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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