Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 81
... ceras ' are by no means so unique as to merit generic separation from Crioceratites s.1 . The features of ' Cryptocrioceras ' are as far removed from the mainstream of Crioceratites as are ' Emericiceras ' or ' Paracrioceras ' . In the ...
... ceras ' are by no means so unique as to merit generic separation from Crioceratites s.1 . The features of ' Cryptocrioceras ' are as far removed from the mainstream of Crioceratites as are ' Emericiceras ' or ' Paracrioceras ' . In the ...
Page 83
... ceras ' , and possibly ' Sornayites ' . The exact systematic position of Menuthio- crioceras within the Crioceratitinae remains an enigma and it is accorded separ- ate generic status . The ornamentation of ' Cryptocrioceras ' resembles ...
... ceras ' , and possibly ' Sornayites ' . The exact systematic position of Menuthio- crioceras within the Crioceratitinae remains an enigma and it is accorded separ- ate generic status . The ornamentation of ' Cryptocrioceras ' resembles ...
Page 131
... ceras s.l. and Crioceratites into different subfamilies ( Crioceratitinae , Ancylo- ceratinae , Helicancylinae ) as is current practice ( cf. Wright 1957 ; Aguirre Urreta 1986 ) and taken to extremes by Dimitrova ( 1970 ) . From a ...
... ceras s.l. and Crioceratites into different subfamilies ( Crioceratitinae , Ancylo- ceratinae , Helicancylinae ) as is current practice ( cf. Wright 1957 ; Aguirre Urreta 1986 ) and taken to extremes by Dimitrova ( 1970 ) . From a ...
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Common terms and phrases
Acrioceras Acrioceras sp Africa Aguirre Urreta 1981 ammonites Ammonoidea Ancyloceras Ancyloceratinae Aptian Aspinoceras aspinoceratid australis sp barremense BMNH body chamber Boreal and Tethyan bullae ceras cliff and gully close coiling coarsely ornamented Collignon 1962 compressed Crioceratites Crioceratites s.s. Cryptocrioceras cundimarcae d'Orbigny diameter dimorphism discussion early whorls emerici Emericiceras family Ancyloceratidae flexuous genus genus Crioceratites Geology Giovine group of Crioceratites Hauterivian Hemihoplites sp holotype Immel inner whorls Kakabadze 1981 Leveillé lobe locality 170 Lower Barremian major ribs material Menuthiocrioceras Mlambongwenya Trading Store monopujaae Neuquén Obata outer whorls Palaeontology Paracrioceras Paraspinoceras Patagonia Pedioceras phragmocone Pseudothurmannia Rawson referred ribs Riccardi & Aguirre Sarkar Sornayites South African Museum southern Patagonia Spath species groups specimens tabarelli Astier taxonomic Tethyan Realm text-fig Thieuloy Thomel trituberculate ribs tubercles type species umbilical shoulder umbilical wall uncoiled Unterkreide Upper Barremian Upper Hauterivian Valanginian venter ventral tubercles ventrolateral shoulder whorl section Wiedmann yrigoyeni Leanza zulu sp Zululand