Annals of the South African Museum, Volume 101 |
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Page 80
3 ( figs 2-3 ) ) is similar to Crioceratites ( C. ) australis sp . nov . in the very short trituberculate stage on the inner whorls . Crioceratites ( C. ) binelli may also develop constrictions on the outer whorls , as in Crioceratites ...
3 ( figs 2-3 ) ) is similar to Crioceratites ( C. ) australis sp . nov . in the very short trituberculate stage on the inner whorls . Crioceratites ( C. ) binelli may also develop constrictions on the outer whorls , as in Crioceratites ...
Page 100
Discussion The ( ontogenetically ) short trituberculate stage and the appearance of prominent constrictions on the outer whorls is characteristic of this species , and easily separates it from Crioceratites ( C. ) yrigoyeni , as well as ...
Discussion The ( ontogenetically ) short trituberculate stage and the appearance of prominent constrictions on the outer whorls is characteristic of this species , and easily separates it from Crioceratites ( C. ) yrigoyeni , as well as ...
Page 130
Kakabadze ( 1981 : 75-76 ) referred to Rawson's ( 1975 ) statement , but regarded the similarities in early whorls of acrioceratid / aspinoceratid and crioceratitid forms as being due to ' phylogenetic proximity ' , rather than ...
Kakabadze ( 1981 : 75-76 ) referred to Rawson's ( 1975 ) statement , but regarded the similarities in early whorls of acrioceratid / aspinoceratid and crioceratitid forms as being due to ' phylogenetic proximity ' , rather than ...
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Contents
MARSKA G see DE DECKER A H B et | 1 |
SHONE R | 9 |
STEWART B A GRIFFITHS C L | 139 |
Copyright | |
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Common terms and phrases
abbreviations Acrioceras Annals antenna appear arranged authors Axis Barremian Bayer BMNH body branches calyces Cape Cape Town capensis capital coast coenenchyme collected colony colour Crioceratites deposits depth described Description Distribution dorsal Durban examined Exp2 Family female figures followed four furca genera genus Gray Hickson holotype illustrations included indicated inner known Kükenthal lateral length Leptogorgia letters locality London Lovenula male margin material Natal Note occur original ornament outer papillae Paradiaptomus Pereopod placed plates Point Polyps present recorded references Remarks represents ribs rods rounded rows scales scientific sclerites segment separates setae short showing side similar single slightly Smith South African Museum southern Africa specimens spindles spines surface synonym Table terminal Thomson trace tuberculate Type species Upper ventral wall whorls