Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumSouth African Museum, 1992 - Natural history |
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Page 107
... aspinoceratid , major ribs non- tuberculate . 4. Acrioceras ( Protacrioceras ) Sarkar , 1955 ( type species Ancyloceras ornatum d'Orbigny , 1850 : 101 ) -coiling aspinoceratid , major ribs trituberculate . This classification has been ...
... aspinoceratid , major ribs non- tuberculate . 4. Acrioceras ( Protacrioceras ) Sarkar , 1955 ( type species Ancyloceras ornatum d'Orbigny , 1850 : 101 ) -coiling aspinoceratid , major ribs trituberculate . This classification has been ...
Page 109
... aspinoceratid ' Protacrioceras ' - type of coiling . Dimitrova's ( 1967 ) interpretation of Protacrioceras is unusual . Protacrio- ceras tzankovi ( Dimitrova , 1967 : 55 , pl . 21 ( fig . 1 , 1a ) , pl . 22 ( fig . 1 ) ) is a gigantic ...
... aspinoceratid ' Protacrioceras ' - type of coiling . Dimitrova's ( 1967 ) interpretation of Protacrioceras is unusual . Protacrio- ceras tzankovi ( Dimitrova , 1967 : 55 , pl . 21 ( fig . 1 , 1a ) , pl . 22 ( fig . 1 ) ) is a gigantic ...
Page 130
... aspinoceratid and crioceratitid coiling should be referred to the same genus ( Hoplocrioceras ) . Immel made his views on dimorphism in general quite clear in a recent discussion ( Immel 1987 ) ; this may explain the total omission of ...
... aspinoceratid and crioceratitid coiling should be referred to the same genus ( Hoplocrioceras ) . Immel made his views on dimorphism in general quite clear in a recent discussion ( Immel 1987 ) ; this may explain the total omission of ...
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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