Annals of the South African Museum, Volume 80The Museum, 1980 - Natural history |
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Page 59
... lateral keels . In typical forms , however , adult ornament is much more spinose and conspicuous , and the ventral tubercles are elevated high above the keel . P. pseudotricarinatum sp . nov . superficially resembles P. zeilleri as ...
... lateral keels . In typical forms , however , adult ornament is much more spinose and conspicuous , and the ventral tubercles are elevated high above the keel . P. pseudotricarinatum sp . nov . superficially resembles P. zeilleri as ...
Page 66
... ornament . Clearly this presents difficulties when dealing with incomplete material , as Matsumoto ( 1970 : 276 ) ... lateral tubercle and division of the ventrolateral node . Thus , in P. stangeri the ventrolateral node divides before the ...
... ornament . Clearly this presents difficulties when dealing with incomplete material , as Matsumoto ( 1970 : 276 ) ... lateral tubercle and division of the ventrolateral node . Thus , in P. stangeri the ventrolateral node divides before the ...
Page 119
... ornament in general becomes weaker , and the venter distinctly fastigiate , as seen at the largest diameter preserved on the holotype . No sign of lateral ( 2 ) tubercles is present at this diameter , and it is assumed that they are ...
... ornament in general becomes weaker , and the venter distinctly fastigiate , as seen at the largest diameter preserved on the holotype . No sign of lateral ( 2 ) tubercles is present at this diameter , and it is assumed that they are ...
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