Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 107
... tabarelli Astier , 1851 : 19 , pl . 7 ( fig . 9 ) ) - coiling acrioceratid , major ribs trituberculate . 2. Acrioceras ( Paraspinoceras ) Breistroffer , 1952 ( type species Ancyloceras pul- cherrimum d'Orbigny , 1840 : 495 , pl . 121 ...
... tabarelli Astier , 1851 : 19 , pl . 7 ( fig . 9 ) ) - coiling acrioceratid , major ribs trituberculate . 2. Acrioceras ( Paraspinoceras ) Breistroffer , 1952 ( type species Ancyloceras pul- cherrimum d'Orbigny , 1840 : 495 , pl . 121 ...
Page 109
... tabarelli ( Astier ) , and A. terveri ( Astier ) . Thomel et al . ( 1990 ) did not regard Protacrioceras as ancestral to Acrio- ceras ; instead , they ( p . 97 ) derived Acrioceras in the Upper Hauterivian ( Zone of Sayni ) from the ...
... tabarelli ( Astier ) , and A. terveri ( Astier ) . Thomel et al . ( 1990 ) did not regard Protacrioceras as ancestral to Acrio- ceras ; instead , they ( p . 97 ) derived Acrioceras in the Upper Hauterivian ( Zone of Sayni ) from the ...
Page 115
... tabarelli ( Astier , 1851 : 19 , pl . 7 ( fig . 9 ) ) , but it connects morphologically with Paraspinoceras pul- cherrimum ( d'Orbigny , 1840 : 495 , pl . 121 ( figs 3-7 ) ) via the compressed , finely ribbed , bituberculate forms ...
... tabarelli ( Astier , 1851 : 19 , pl . 7 ( fig . 9 ) ) , but it connects morphologically with Paraspinoceras pul- cherrimum ( d'Orbigny , 1840 : 495 , pl . 121 ( figs 3-7 ) ) via the compressed , finely ribbed , bituberculate forms ...
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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