Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 250
... occur at different rates in different individuals of the same species , while others may omit later develop- mental stages . As a result , assemblages can include adult forms with the same ornament as juveniles , as well as individuals ...
... occur at different rates in different individuals of the same species , while others may omit later develop- mental stages . As a result , assemblages can include adult forms with the same ornament as juveniles , as well as individuals ...
Page 253
... occur together with the smaller , strongly ornamented Karamaites gaurdakense ( Luppov , 1963 ) . Middle Coniacian Placenticeras kaffrarium from Zululand also show distinct dimorphic pairs , macroconchs retaining weaker ornament to ...
... occur together with the smaller , strongly ornamented Karamaites gaurdakense ( Luppov , 1963 ) . Middle Coniacian Placenticeras kaffrarium from Zululand also show distinct dimorphic pairs , macroconchs retaining weaker ornament to ...
Page 407
... occur . ' Placentoscaphites Chiplonkar & Ghare , 1977 : 68-69 ' Genotype . Placentoscaphites dangerfieldi sp . nov . Diagnosis Shell moderately large with oval umbilicus ; whorls more or less compressed to convex and tumid ...
... occur . ' Placentoscaphites Chiplonkar & Ghare , 1977 : 68-69 ' Genotype . Placentoscaphites dangerfieldi sp . nov . Diagnosis Shell moderately large with oval umbilicus ; whorls more or less compressed to convex and tumid ...
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