Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 74
... Zone , which occurs above the Favrella wilckensi assemblage Zone and below the Colchidites assemblage Zone ( see e.g. Riccardi 1984a , 1984b ; 1988 : 57 , table 15 ; Riccardi et al . 1987 : 120 ; Riccardi & Aguirre Urreta 1989 : 448 ) ...
... Zone , which occurs above the Favrella wilckensi assemblage Zone and below the Colchidites assemblage Zone ( see e.g. Riccardi 1984a , 1984b ; 1988 : 57 , table 15 ; Riccardi et al . 1987 : 120 ; Riccardi & Aguirre Urreta 1989 : 448 ) ...
Page 97
... Zone . In Zululand , C. ( C. ) yrigoyeni occurs below the zone of abundant Colchidites vulanensis australis Klinger et al . , 1984 , Barremian I. Туре Crioceratites ( Crioceratites ) australis sp . nov . CRETACEOUS FAUNAS FROM SOUTH ...
... Zone . In Zululand , C. ( C. ) yrigoyeni occurs below the zone of abundant Colchidites vulanensis australis Klinger et al . , 1984 , Barremian I. Туре Crioceratites ( Crioceratites ) australis sp . nov . CRETACEOUS FAUNAS FROM SOUTH ...
Page 98
... zone being distinct , if shallow . The whorl section is typically com- pressed , trapezoidal , with a broad dorsum , broadly rounded umbilical shoulders , flattened convergent flanks , rather narrowly rounded ventrolateral shoulders ...
... zone being distinct , if shallow . The whorl section is typically com- pressed , trapezoidal , with a broad dorsum , broadly rounded umbilical shoulders , flattened convergent flanks , rather narrowly rounded ventrolateral shoulders ...
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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