Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
From inside the book
Results 1-3 of 7
Page 98
... venter . The greatest breadth is close to the umbilical shoulder . At the smallest diameter visible ( 30 mm ) , ornament consists of distant umbilical bullae giving rise to groups of two to three ribs with three or four single , non ...
... venter . The greatest breadth is close to the umbilical shoulder . At the smallest diameter visible ( 30 mm ) , ornament consists of distant umbilical bullae giving rise to groups of two to three ribs with three or four single , non ...
Page 114
... venter . Less compressed forms , such as C80005a ( Fig . 26C ) , are more robustly ribbed and with a distinct rursiradiate style and stronger suggestion of a lower ventrolateral tubercle . These specimens form a link to the coarsely ...
... venter . Less compressed forms , such as C80005a ( Fig . 26C ) , are more robustly ribbed and with a distinct rursiradiate style and stronger suggestion of a lower ventrolateral tubercle . These specimens form a link to the coarsely ...
Page 124
... 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 extend to the umbilicus , where ...
... 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 extend to the umbilicus , where ...
Other editions - View all
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