Annals of the South African Museum, Volume 80The Museum, 1980 - Natural history |
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Page 5
... throughout , except in P. ( Anatexanites ) where a lateral ( 2 ) row of tubercles is added in later stages . Paratexanites is quadri- tuberculate throughout , lacking the lateral ( 2 ) row of tubercles . Texanites is pentatuberculate ...
... throughout , except in P. ( Anatexanites ) where a lateral ( 2 ) row of tubercles is added in later stages . Paratexanites is quadri- tuberculate throughout , lacking the lateral ( 2 ) row of tubercles . Texanites is pentatuberculate ...
Page 107
... throughout , and lacks the inner whorls . Coiling is evolute , with an umbilical diameter of 45,8 per cent . The whorl section is distinctly higher than wide , with a very shallow dorsal zone of impres- sion , widely rounded umbilical ...
... throughout , and lacks the inner whorls . Coiling is evolute , with an umbilical diameter of 45,8 per cent . The whorl section is distinctly higher than wide , with a very shallow dorsal zone of impres- sion , widely rounded umbilical ...
Page 119
... throughout . Rib density is nineteen per whorl . A large body chamber fragment , SAS - H126A / 4 ( Fig . 94A - B ) from the same locality and horizon as the holotype , has a distinct tricarinate keel , and is here regarded as ...
... throughout . Rib density is nineteen per whorl . A large body chamber fragment , SAS - H126A / 4 ( Fig . 94A - B ) from the same locality and horizon as the holotype , has a distinct tricarinate keel , and is here regarded as ...
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