Annals of the South African Museum, Volume 80The Museum, 1980 - Natural history |
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Page 5
... row of tubercles is added in later stages . Paratexanites is quadri- tuberculate throughout , lacking the lateral ( 2 ) row of tubercles . Texanites is pentatuberculate from an early stage , as is Submortoniceras , but in the latter ...
... row of tubercles is added in later stages . Paratexanites is quadri- tuberculate throughout , lacking the lateral ( 2 ) row of tubercles . Texanites is pentatuberculate from an early stage , as is Submortoniceras , but in the latter ...
Page 13
... row of tubercles on the dorsal part of the flanks on the outer whorl . This may be an example of P. ( Anatexanites ) . Comparisons with other Protexanites s.s. species are as follows : P. ( P. ) canaensis ( Gerhardt ) does not have as ...
... row of tubercles on the dorsal part of the flanks on the outer whorl . This may be an example of P. ( Anatexanites ) . Comparisons with other Protexanites s.s. species are as follows : P. ( P. ) canaensis ( Gerhardt ) does not have as ...
Page 317
... rows of tubercles are already present . These are : a conical umbilical ( 1 ) tubercle connected to a thickened rib which con- tains the second , third and fourth rows of tubercles , and of which the third row is most prominent . At the ...
... rows of tubercles are already present . These are : a conical umbilical ( 1 ) tubercle connected to a thickened rib which con- tains the second , third and fourth rows of tubercles , and of which the third row is most prominent . At the ...
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