Annals of the South African Museum, Volume 80The Museum, 1980 - Natural history |
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Page 13
... marginal ( 3 ) , marginal ( 4 ) , and external ( 5 ) . In early stages the submarginal ( 3 ) and marginal ( 4 ) tubercles are situated close together , sharing a single base . Separation of these two tubercles takes place at varying ...
... marginal ( 3 ) , marginal ( 4 ) , and external ( 5 ) . In early stages the submarginal ( 3 ) and marginal ( 4 ) tubercles are situated close together , sharing a single base . Separation of these two tubercles takes place at varying ...
Page 138
... marginal ( 4 ) tubercles clearly exposed in the umbilical seam . Increase in diameter is rapid . The costal whorl ... marginal ( 3 ) , marginal ( 4 ) , and external ( 5 ) tubercles are situated closer to each other than the umbilical and ...
... marginal ( 4 ) tubercles clearly exposed in the umbilical seam . Increase in diameter is rapid . The costal whorl ... marginal ( 3 ) , marginal ( 4 ) , and external ( 5 ) tubercles are situated closer to each other than the umbilical and ...
Page 339
... marginal ( 3 ) tubercle , poorly developed marginal ( 4 ) tubercle but prominent external ( 5 ) tubercles , all situated on poorly developed radial to prorsiradiate ribs . The ribs may be single , but the majority generally bifurcate at ...
... marginal ( 3 ) tubercle , poorly developed marginal ( 4 ) tubercle but prominent external ( 5 ) tubercles , all situated on poorly developed radial to prorsiradiate ribs . The ribs may be single , but the majority generally bifurcate at ...
Contents
THE AMMONITE SUBFAMILY TEXANITINAE COLLIGNON | 2 |
Evolution and evolutionary trends in Texanitinae | 348 |
References | 354 |
Copyright | |
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Common terms and phrases
Africa Ammonites australis Besairie besairiei Bevahites bifurcations body chamber CALIFORN Campanian of Madagascar clavate Collignon 1948 Coniacian Cretaceous ERSITY external tubercles falloti False Bay flanks Gulf Coast higher than wide Hoepen Hokkaido holotype inner whorls jeanneti Kennedy & Klinger lateral keels lateral ornament lateral tubercle lobes Lower Campanian Lower Santonian marginal material Matsumoto 1970 Menabites Australiella Menabites Delawarella Middle Campanian Mortoniceras occur ontogeny outer whorls Parabevahites Paratexanites Paratexanites pseudotricarinatum sp Paratype phragmocone Plesiotexanites stangeri Baily Pondoland radially elongated Reginaites ribs Richards Bay row of tubercles SAN DIEGO soutoni natalense ssp Spath specimen figured St Lucia Formation stage stratigraphic subdelawarensis submarginal Submortoniceras woodsi suture suture line Texanites soutoni natalense Texanites soutoni soutoni texanitids Texanitinae texanus text-fig tonian Transkei trituberculate type species umbilical diameter umbilical tubercles umbilical wall umbilical width Umkwelane Hill Umzamba Formation umzambiense undulating keel Upper Santonian vanhoepeni venter ventrolateral tubercles whorl section Zululand Zululand specimens