Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 83
... shaft after the planispiral section , which clearly distinguishes it from ' Cryptocrioceras ' . Relationships between ' Cryptocrioceras ' and Pedioceras Gerhardt , 1897 ( type species Pedioceras cundimarcae Gerhardt , 1897 : 172 , pl ...
... shaft after the planispiral section , which clearly distinguishes it from ' Cryptocrioceras ' . Relationships between ' Cryptocrioceras ' and Pedioceras Gerhardt , 1897 ( type species Pedioceras cundimarcae Gerhardt , 1897 : 172 , pl ...
Page 110
... shaft . None of our specimens possesses a com- plete crozier , but PCZ8423 ( Fig . 33A - B ) shows part of a short hook , as does C80009 ( Fig . 34 ) , suggesting an overall length of c . 50 mm at maturity . The earliest developmental ...
... shaft . None of our specimens possesses a com- plete crozier , but PCZ8423 ( Fig . 33A - B ) shows part of a short hook , as does C80009 ( Fig . 34 ) , suggesting an overall length of c . 50 mm at maturity . The earliest developmental ...
Page 114
... shaft . SAM - PCZ8666 . C. Coarsely ornamented criocone whorls that could belong to either Acrioceras ( A. ) zulu sp . nov . or coarsely ornamented form of Crioceratites ( C. ) yrigoyeni ( Leanza , 1970 ) . SAM - PCZ8667 . Both x 1 ...
... shaft . SAM - PCZ8666 . C. Coarsely ornamented criocone whorls that could belong to either Acrioceras ( A. ) zulu sp . nov . or coarsely ornamented form of Crioceratites ( C. ) yrigoyeni ( Leanza , 1970 ) . SAM - PCZ8667 . Both x 1 ...
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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