Annals of the South African Museum, Volume 80The Museum, 1980 - Natural history |
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Page 58
... venter in the adult stage is strongest , with the ribs crossing the venter with little reduction of strength . Umbilical width in this specimen is also greatest at 56,8 per cent . Var . E , represented by NMB - D1364 ( Fig . 43 ) has ...
... venter in the adult stage is strongest , with the ribs crossing the venter with little reduction of strength . Umbilical width in this specimen is also greatest at 56,8 per cent . Var . E , represented by NMB - D1364 ( Fig . 43 ) has ...
Page 119
... venter in the late phragmocone to distinctly higher than wide on the body chamber ( Fig . 90A ) . The innermost whorls are not preserved , but at a diameter of c . 55 mm , ornament consists of a row of conical umbilical ( 1 ) tubercles ...
... venter in the late phragmocone to distinctly higher than wide on the body chamber ( Fig . 90A ) . The innermost whorls are not preserved , but at a diameter of c . 55 mm , ornament consists of a row of conical umbilical ( 1 ) tubercles ...
Page 122
... venter is definitely tricarinate . On the smaller specimen , SAM - 5687 , the venter is preserved partially as an internal cast , and partially with the shell preserved ( Fig . 93C ) . In both examples the lateral keels are continuous ...
... venter is definitely tricarinate . On the smaller specimen , SAM - 5687 , the venter is preserved partially as an internal cast , and partially with the shell preserved ( Fig . 93C ) . In both examples the lateral keels are continuous ...
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