Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 260
... suture . Inseparable from this are attempts to use sutural ontogeny to trace the ancestry of the placenticeratids to ... line though with an increased number of elements ' . This type of suture line is often found associated with a ...
... suture . Inseparable from this are attempts to use sutural ontogeny to trace the ancestry of the placenticeratids to ... line though with an increased number of elements ' . This type of suture line is often found associated with a ...
Page 401
... suture line of the genus . Comparison Of the genus Proplacenticeras Spath ( 1926 ) characterized by the structure of the suture line , having a distinctly expressed slant of the first lobe towards the second lobe , and an asymmetrical ...
... suture line of the genus . Comparison Of the genus Proplacenticeras Spath ( 1926 ) characterized by the structure of the suture line , having a distinctly expressed slant of the first lobe towards the second lobe , and an asymmetrical ...
Page 404
... suture line of Anaplacenticeras gen . n . has more massive lobes and narrower saddles . In Cleoniceras Parona ... suture lines in these genera are different . ( Free translation from original Russian . ) Diagnosis of the genus Gissarites ...
... suture line of Anaplacenticeras gen . n . has more massive lobes and narrower saddles . In Cleoniceras Parona ... suture lines in these genera are different . ( Free translation from original Russian . ) Diagnosis of the genus Gissarites ...
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