Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 81
... connect ' Cryptocrioceras ' , via ' Sornayites ' , with the genus Crioceratites , the morphological similarities and geographic prox- imity with the predominantly Malagasy crioceratitid genus Menuthiocrioceras Collignon , 1949 , cannot ...
... connect ' Cryptocrioceras ' , via ' Sornayites ' , with the genus Crioceratites , the morphological similarities and geographic prox- imity with the predominantly Malagasy crioceratitid genus Menuthiocrioceras Collignon , 1949 , cannot ...
Page 82
... connection is that we do not have any material between the last occurrence of Menuthio- crioceras in the Upper ... connect with loosely coiled Crioceratites gr . ex . C. emerici . As far as we know , however , the general trend in ...
... connection is that we do not have any material between the last occurrence of Menuthio- crioceras in the Upper ... connect with loosely coiled Crioceratites gr . ex . C. emerici . As far as we know , however , the general trend in ...
Page 114
... connect to one of these more pronounced tubercles . All ribs are broad and low and feebly convex across the venter . Less compressed forms , such as C80005a ( Fig . 26C ) , are more robustly ribbed and with a distinct rursiradiate style ...
... connect to one of these more pronounced tubercles . All ribs are broad and low and feebly convex across the venter . Less compressed forms , such as C80005a ( Fig . 26C ) , are more robustly ribbed and with a distinct rursiradiate style ...
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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