Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 84
... variable as far as coiling of the inner whorls , nature and strength of ornament throughout , and inflation of the whorl section are concerned . Coiling on the inner whorls is crioceratitid , with major trituberculate and intermediary ...
... variable as far as coiling of the inner whorls , nature and strength of ornament throughout , and inflation of the whorl section are concerned . Coiling on the inner whorls is crioceratitid , with major trituberculate and intermediary ...
Page 93
... variable both in form and number , as shown by Figures 6-13 . At one extreme is a single , relatively weak rib bearing no , or only small , ventrolateral spines . Others may bear umbilical / lateral and upper ventrolateral tubercles or ...
... variable both in form and number , as shown by Figures 6-13 . At one extreme is a single , relatively weak rib bearing no , or only small , ventrolateral spines . Others may bear umbilical / lateral and upper ventrolateral tubercles or ...
Page 110
... variable - open with the early whorls not in close contact in C80005c ( Fig . 28A ) and tight with the whorls in close contact in PCZ8443 ( Fig . 30A - D ) . The whorl section of the early spiral varies from compressed in C80005c to ...
... variable - open with the early whorls not in close contact in C80005c ( Fig . 28A ) and tight with the whorls in close contact in PCZ8443 ( Fig . 30A - D ) . The whorl section of the early spiral varies from compressed in C80005c to ...
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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