Annals of the South African MuseumThe Museum, 1989 - Natural history |
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Page 243
... Wright ( 1983 ) in their pioneering study of Placenticeras polyopsis ( Dujardin , 1837 ) . The Zululand representatives of this family , Placenticeras kaffrarium Etheridge , 1904 , and Hoplitoplacenticeras howarthi Collignon , 1970 ...
... Wright ( 1983 ) in their pioneering study of Placenticeras polyopsis ( Dujardin , 1837 ) . The Zululand representatives of this family , Placenticeras kaffrarium Etheridge , 1904 , and Hoplitoplacenticeras howarthi Collignon , 1970 ...
Page 260
... Wright ( 1983 ) , both saddles and lobes are finely frilled and the term ' pseudoceratitic ' is a misnomer . Thus from this point of view , the family Placenticeratidae — as interpreted by Wright ( 1957 ) and Kennedy & Wright ( 1983 ) ...
... Wright ( 1983 ) , both saddles and lobes are finely frilled and the term ' pseudoceratitic ' is a misnomer . Thus from this point of view , the family Placenticeratidae — as interpreted by Wright ( 1957 ) and Kennedy & Wright ( 1983 ) ...
Page 356
... Wright ( 1957 : L392 ) defined Hoplitoplacenticeras as ' Rather evolute for family ; whorl section compressed to trapezoidal , venter flat ; with prominent variable coarse rounded or dense fine ribs , nearly straight , bearing 2 rows of ...
... Wright ( 1957 : L392 ) defined Hoplitoplacenticeras as ' Rather evolute for family ; whorl section compressed to trapezoidal , venter flat ; with prominent variable coarse rounded or dense fine ribs , nearly straight , bearing 2 rows of ...
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Common terms and phrases
adult adventive lobe Albian ammonites Atlantic Benson body chamber bottom depth Campanian Cape Town catch rates Cenomanian Central Asia Chiplonkar & Ghare compressed Coniacian continental diameter Diaphus dimorphism distribution Engonoceratidae fauna flanks genus Group holotype Hoplitoplacenticeras Hulley Hyatt Hypengonoceras decaryi Collignon Iljin intraspecific variation isobath Karamaites Kennedy & Wright Klinger Lampanyctodes hectoris lanternfish lateral lobe lateral ornament lateral tubercles Maastrichtian Macroconch Madagascar Marine Metaplacenticeras Michailova Microconch with type myctophid oceanic ontogenetic changes ontogeny Orange Shelf ostracod Parengonoceras Paulcke pelagic phragmocone Placenticeras kaffrarium Etheridge Placenticeras polyopsis Placenticeratidae polyopsis Dujardin Proplacenticeras pseudoceanic ribs saddle Santonian separated Shannon shell smooth South African Museum south-western Africa southern Benguela region Spath specimens specimens.hı stage stations subkaffrarium sutural ontogeny suture suture line SW Cape temperature text-fig Turonian Type species umbilical tubercles umbilicus umkwelanense Upper Albian Upper Campanian Upper Cretaceous upwelling venter ventral clavi Whatley whorl section Wiedmann Zululand