Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 78
... phragmocone to simple ribbing on the body chamber . All the specimens of C. ( C. ) janus figured by Thieuloy ( 1979 ) are small in comparison to the other species in this group , and we are not sure if these are all juveniles or ...
... phragmocone to simple ribbing on the body chamber . All the specimens of C. ( C. ) janus figured by Thieuloy ( 1979 ) are small in comparison to the other species in this group , and we are not sure if these are all juveniles or ...
Page 82
... phragmocone diameters of 30-40 cm ( see e.g. M. sornayi in Collignon 1962 , pl . 208 ( fig . 925 ) ) , with orna- ment varying from densely ribbed ( e.g. M. kuntzi ) to very faint as in M. sarkari . Flared trituberculate ribs may occur ...
... phragmocone diameters of 30-40 cm ( see e.g. M. sornayi in Collignon 1962 , pl . 208 ( fig . 925 ) ) , with orna- ment varying from densely ribbed ( e.g. M. kuntzi ) to very faint as in M. sarkari . Flared trituberculate ribs may occur ...
Page 97
... phragmocone of Pseudocrioceras , best known from the Caucasus ( see e.g. Rouchadze 1933 , 1938 ; Kakabadze 1978 , 1981 ) is very similar to that of C. ( C. ) yrigoyeni but , as pointed out above and by Kaka- badze ( 1978 , 1981 ) , the ...
... phragmocone of Pseudocrioceras , best known from the Caucasus ( see e.g. Rouchadze 1933 , 1938 ; Kakabadze 1978 , 1981 ) is very similar to that of C. ( C. ) yrigoyeni but , as pointed out above and by Kaka- badze ( 1978 , 1981 ) , the ...
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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