Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 241
... variation . Dimorphism CONTENTS Ontogenetic changes . . Differing rates of development .. Variation in relative proportions Phylogenetic change . . Geographic variation Sutural ontogeny , phylogeny and systematics 241 Ann . S. Afr . Mus ...
... variation . Dimorphism CONTENTS Ontogenetic changes . . Differing rates of development .. Variation in relative proportions Phylogenetic change . . Geographic variation Sutural ontogeny , phylogeny and systematics 241 Ann . S. Afr . Mus ...
Page 245
... variation : 1. Dimorphism . 2. Ontogenetic changes . 3. Differing rates of development giving individuals of the same size but at a different point in ontogeny , different ornament ; a result of size dimorphism and of variation of adult ...
... variation : 1. Dimorphism . 2. Ontogenetic changes . 3. Differing rates of development giving individuals of the same size but at a different point in ontogeny , different ornament ; a result of size dimorphism and of variation of adult ...
Page 278
Description Description of the variation shown by the species is best accomplished in terms of the the following factors . 1. Ontogenetic changes For descriptive purposes the ontogeny in typical forms can be approximately divided into ...
Description Description of the variation shown by the species is best accomplished in terms of the the following factors . 1. Ontogenetic changes For descriptive purposes the ontogeny in typical forms can be approximately divided into ...
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