Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 98
... shoulders , flattened convergent flanks , rather narrowly rounded ventrolateral shoulders , and flattened venter . The greatest breadth is close to the umbilical shoulder . At the smallest diameter visible ( 30 mm ) , ornament consists ...
... shoulders , flattened convergent flanks , rather narrowly rounded ventrolateral shoulders , and flattened venter . The greatest breadth is close to the umbilical shoulder . At the smallest diameter visible ( 30 mm ) , ornament consists ...
Page 114
... shoulder . They are slightly prorsiradiate on the flanks , feebly convex on the inner flank , concave on the outer flank , and quite markedly projected on the ventrolateral shoulder . Narrow at the umbili- cus , the ribs thicken and ...
... shoulder . They are slightly prorsiradiate on the flanks , feebly convex on the inner flank , concave on the outer flank , and quite markedly projected on the ventrolateral shoulder . Narrow at the umbili- cus , the ribs thicken and ...
Page 124
... shoulders bluntly rounded , and the venter narrow and broadly rounded . The greatest breadth is close to the umbilical shoulder . Ornament consists of low , narrow , dense , crowded , rounded ribs . On the preserved fragment , nine ribs ...
... shoulders bluntly rounded , and the venter narrow and broadly rounded . The greatest breadth is close to the umbilical shoulder . Ornament consists of low , narrow , dense , crowded , rounded ribs . On the preserved fragment , nine ribs ...
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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