Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 80
... inner whorls . Crioceratites ( C. ) binelli may also develop constrictions on the outer whorls , as in Crioceratites ( C. ) australis , albeit associated with major ribs . The ribs on the outer whorls of C. ( C. ) binelli diverge from ...
... inner whorls . Crioceratites ( C. ) binelli may also develop constrictions on the outer whorls , as in Crioceratites ( C. ) australis , albeit associated with major ribs . The ribs on the outer whorls of C. ( C. ) binelli diverge from ...
Page 84
... inner whorls , nature and strength of ornament throughout , and inflation of the whorl section are concerned . Coiling on the inner whorls is crioceratitid , with major trituberculate and intermediary , tuberculate or non - tuberculate ...
... inner whorls , nature and strength of ornament throughout , and inflation of the whorl section are concerned . Coiling on the inner whorls is crioceratitid , with major trituberculate and intermediary , tuberculate or non - tuberculate ...
Page 100
... inner whorls , and in the presence of occasional constrictions . In C. ( C. ) binelli , however , the constric- tions are associated with thickened ribs that may bear umbilical and ventral tubercles . Amongst the Boreal species , C. ( C ...
... inner whorls , and in the presence of occasional constrictions . In C. ( C. ) binelli , however , the constric- tions are associated with thickened ribs that may bear umbilical and ventral tubercles . Amongst the Boreal species , C. ( C ...
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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