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 6
Page 73
... lobe ; U = umbilical lobe ; L = lateral lobe ; E = external lobe . SYSTEMATIC PALAEONTOLOGY Phylum MOLLUSCA Cuvier , 1797 Class CEPHALOPODA Zittel , 1884 Order AMMONOIDEA Zittel , 1884 Suborder ANCYLOCERATINA Wiedmann , 1966 Superfamily ...
... lobe ; U = umbilical lobe ; L = lateral lobe ; E = external lobe . SYSTEMATIC PALAEONTOLOGY Phylum MOLLUSCA Cuvier , 1797 Class CEPHALOPODA Zittel , 1884 Order AMMONOIDEA Zittel , 1884 Suborder ANCYLOCERATINA Wiedmann , 1966 Superfamily ...
Page 99
... lobe ( E ) in which there is a large median element . The lateral lobe ( L ) is large and asymmetrically trifid ; the umbilical lobe ( U ) is smaller but also asymmetri- cally trifid ; and the internal lobe ( I ) is intricately ...
... lobe ( E ) in which there is a large median element . The lateral lobe ( L ) is large and asymmetrically trifid ; the umbilical lobe ( U ) is smaller but also asymmetri- cally trifid ; and the internal lobe ( I ) is intricately ...
Page 124
... lobe ( L ) is large and asymmetrically trifid ; the umbilical lobe ( U ) is small and imperfectly exposed ; E / L is broad and asymmetrically bifid ; and L / U is smaller and more symmetrically bifid . Discussion Our specimen resembles ...
... lobe ( L ) is large and asymmetrically trifid ; the umbilical lobe ( U ) is small and imperfectly exposed ; E / L is broad and asymmetrically bifid ; and L / U is smaller and more symmetrically bifid . Discussion Our specimen resembles ...
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