Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 110
... earliest developmental stages are best seen in C80005c ( Fig . 28A ) , and PCZ8443 ( Fig . 30A - D ) . The former shows the ... early spiral varies from compressed in C80005c to depressed in PCZ8443 ( Figs 28A , 30A - D ) . The dorsum is ...
... earliest developmental stages are best seen in C80005c ( Fig . 28A ) , and PCZ8443 ( Fig . 30A - D ) . The former shows the ... early spiral varies from compressed in C80005c to depressed in PCZ8443 ( Figs 28A , 30A - D ) . The dorsum is ...
Page 117
... Early criocone whorls of Acrioceras ( A. ) zulu sp . nov . SAM - PCZ8440 . E. ? Acrioceras ( A. ) zulu sp . nov . SAM - PCZ8430 . F - J . Early acriocone whorls of Acrioceras ( A. ) zulu sp . nov . or Crioceratites ( C. ) yrigoyeni ...
... Early criocone whorls of Acrioceras ( A. ) zulu sp . nov . SAM - PCZ8440 . E. ? Acrioceras ( A. ) zulu sp . nov . SAM - PCZ8430 . F - J . Early acriocone whorls of Acrioceras ( A. ) zulu sp . nov . or Crioceratites ( C. ) yrigoyeni ...
Page 130
... early whorls of acrioceratid / aspinoceratid and crioceratitid forms as being due to ' phylogenetic proximity ' , rather than dimorphism . Surprisingly enough , Thomel et al . ( 1990 ) scarcely touched on the topic of dimorphism in ...
... early whorls of acrioceratid / aspinoceratid and crioceratitid forms as being due to ' phylogenetic proximity ' , rather than dimorphism . Surprisingly enough , Thomel et al . ( 1990 ) scarcely touched on the topic of dimorphism in ...
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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