Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 77
... text - fig . 3. ) from the Lower Hauterivian to the Upper Barremian , which could make it a potential ancestral group . In the group of Crioceratites ( C. ) nolani , the species closest to ' Cryptocrioceras ' , especially its type ...
... text - fig . 3. ) from the Lower Hauterivian to the Upper Barremian , which could make it a potential ancestral group . In the group of Crioceratites ( C. ) nolani , the species closest to ' Cryptocrioceras ' , especially its type ...
Page 78
... text - fig . 3. ) As far as the strong trituberculation of the major ribs and the low number of intermediaries on the inner whorls are concerned , ' Cryptocrioceras ' finds its closest match in the group of Crioceratites ( C ...
... text - fig . 3. ) As far as the strong trituberculation of the major ribs and the low number of intermediaries on the inner whorls are concerned , ' Cryptocrioceras ' finds its closest match in the group of Crioceratites ( C ...
Page 97
... text - fig . 4 ) and even form a recurved hook , as shown in a large specimen housed in the collections of the Staatliches Museum für Naturkunde , Stuttgart ( Fig . 4 ) . The ornamentation on the phragmocone of Pseudocrioceras , best ...
... text - fig . 4 ) and even form a recurved hook , as shown in a large specimen housed in the collections of the Staatliches Museum für Naturkunde , Stuttgart ( Fig . 4 ) . The ornamentation on the phragmocone of Pseudocrioceras , best ...
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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