Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 129
... DIMORPHISM AND SYSTEMATICS IN CRIOCERATITINAE AND ANCYLOCERATINAE Rawson ( 1975 : 282 ) suggested that Ancyloceratidae with ancyloceratid / aspi- noceratid coiling ( herein referred to as acrioceratid ) , and larger , crioceratitid ...
... DIMORPHISM AND SYSTEMATICS IN CRIOCERATITINAE AND ANCYLOCERATINAE Rawson ( 1975 : 282 ) suggested that Ancyloceratidae with ancyloceratid / aspi- noceratid coiling ( herein referred to as acrioceratid ) , and larger , crioceratitid ...
Page 130
... dimorphism . Immel ( 1978 : 28 ) , in his revision of the Hauterivian - Barremian Criocerati- tinae , totally ignored the issue of dimorphism , but disagreed with Spath's ( 1924 ) views that forms with aspinoceratid and crioceratitid ...
... dimorphism . Immel ( 1978 : 28 ) , in his revision of the Hauterivian - Barremian Criocerati- tinae , totally ignored the issue of dimorphism , but disagreed with Spath's ( 1924 ) views that forms with aspinoceratid and crioceratitid ...
Page 131
... dimorphic pair . This association is analogous to that of Acrioceras - ' Emericiceras ' in the Tethyan Realm , and Acrioceras - ' Paracrioceras ' in the Boreal Realm . A full discussion on dimorphism in the subfamilies Crioceratitinae ...
... dimorphic pair . This association is analogous to that of Acrioceras - ' Emericiceras ' in the Tethyan Realm , and Acrioceras - ' Paracrioceras ' in the Boreal Realm . A full discussion on dimorphism in the subfamilies Crioceratitinae ...
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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