Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 75
... Pseudothurmannia as a subgenus in Crioceratites s.l. , a view followed here . The most significant aspect of Wiedmann's ( 1962 ) work was that he recognized a trend towards recoiling ( Fig . 1 ) , and the concurrent reduction or ...
... Pseudothurmannia as a subgenus in Crioceratites s.l. , a view followed here . The most significant aspect of Wiedmann's ( 1962 ) work was that he recognized a trend towards recoiling ( Fig . 1 ) , and the concurrent reduction or ...
Page 77
... ( Pseudothurmannia ) mortileti . ( Redrawn after Immel 1979 , text - fig . 3. ) from the Lower Hauterivian to the Upper Barremian , which could make it a potential ancestral group . In the group of Crioceratites ( C. ) nolani , the ...
... ( Pseudothurmannia ) mortileti . ( Redrawn after Immel 1979 , text - fig . 3. ) from the Lower Hauterivian to the Upper Barremian , which could make it a potential ancestral group . In the group of Crioceratites ( C. ) nolani , the ...
Page 124
... Pseudothurmannia , perhaps allied to C. ( P. ) angulicostata ( d'Orbigny , 1840 ) ( see e.g. Lapeyre 1974 : 82 , pl ... ( Pseudothurmannia ) species , however , some of the ribs arise in groups from elongated umbilical nodes on the outer ...
... Pseudothurmannia , perhaps allied to C. ( P. ) angulicostata ( d'Orbigny , 1840 ) ( see e.g. Lapeyre 1974 : 82 , pl ... ( Pseudothurmannia ) species , however , some of the ribs arise in groups from elongated umbilical nodes on the outer ...
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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