Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 81
... occurs with Acrioceras in Zululand- —a situation similar to that found in Boreal and Tethyan Europe where ' Emericiceras ' and ' Paracrioceras ' also occur associated with Acrioceras . Studies on the subfamily Heteroceratinae by Klinger ...
... occurs with Acrioceras in Zululand- —a situation similar to that found in Boreal and Tethyan Europe where ' Emericiceras ' and ' Paracrioceras ' also occur associated with Acrioceras . Studies on the subfamily Heteroceratinae by Klinger ...
Page 82
... occur in large fragments of M. sornayi ( e.g. pl . 209 ( fig . 927 ) ) ; others seem to have only faint trituberculate ribbing . Distinct constrictions occur in M. ampakabense . In addition , Collignon ( 1962 : 20 , pl . 431 ( fig . 821 ) ...
... occur in large fragments of M. sornayi ( e.g. pl . 209 ( fig . 927 ) ) ; others seem to have only faint trituberculate ribbing . Distinct constrictions occur in M. ampakabense . In addition , Collignon ( 1962 : 20 , pl . 431 ( fig . 821 ) ...
Page 114
... occurs - the major ribs bearing variably developed umbilical tubercles , very strong ventrolateral and strong ventral ... occur . On the more robustly ornamented specimens ( Fig . 29A - B ) , differentiation of ribbing is more pronounced ...
... occurs - the major ribs bearing variably developed umbilical tubercles , very strong ventrolateral and strong ventral ... occur . On the more robustly ornamented specimens ( Fig . 29A - B ) , differentiation of ribbing is more pronounced ...
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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