Annals of the South African Museum, Volume 101The Museum, 1992 - Natural history |
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Page 109
... tabarelli ( Astier ) , and A. terveri ( Astier ) . Thomel et al . ( 1990 ) did not regard Protacrioceras as ancestral to Acrio- ceras ; instead , they ( p . 97 ) derived Acrioceras in the Upper Hauterivian ( Zone of Sayni ) from the ...
... tabarelli ( Astier ) , and A. terveri ( Astier ) . Thomel et al . ( 1990 ) did not regard Protacrioceras as ancestral to Acrio- ceras ; instead , they ( p . 97 ) derived Acrioceras in the Upper Hauterivian ( Zone of Sayni ) from the ...
Page 115
... tabarelli ( Astier , 1851 : 19 , pl . 7 ( fig . 9 ) ) , but it connects morphologically with Paraspinoceras pul- cherrimum ( d'Orbigny , 1840 : 495 , pl . 121 ( figs 3-7 ) ) via the compressed , finely ribbed , bituberculate forms ...
... tabarelli ( Astier , 1851 : 19 , pl . 7 ( fig . 9 ) ) , but it connects morphologically with Paraspinoceras pul- cherrimum ( d'Orbigny , 1840 : 495 , pl . 121 ( figs 3-7 ) ) via the compressed , finely ribbed , bituberculate forms ...
Page 120
... tabarelli known , to finely ornamented , bi- or incipiently quadri- tuberculate forms , although never as finely ornamented as Paraspinoceras pulcherrimum . According to Thomel et al . ( 1990 ) , Acrioceras tabarelli is restricted to ...
... tabarelli known , to finely ornamented , bi- or incipiently quadri- tuberculate forms , although never as finely ornamented as Paraspinoceras pulcherrimum . According to Thomel et al . ( 1990 ) , Acrioceras tabarelli is restricted to ...
Contents
SHONE R | 8 |
Distribution | 39 |
STEWART B A GRIFFITHS C L | 138 |
Copyright | |
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abbreviations Acabaria Acrioceras Aguirre Urreta Algoa Bay ammonites Ammonoidea Annals antenna Anthocodiae Augen australis author's name Axis Barremian Bayer bicuspidata BMNH body wall branches calyces Cape Province Cape Town capensis Coenenchymal sclerites coiling Collignon Colony colour Colotes cortex coxa Crioceratites Cryptocrioceras described dichotomous dredge elongate Emericiceras Eunicella Exp2 Family Flügeldecken G. C. Williams gelb genera genus gilchristi Halsschild Hauterivian Hemihoplites Hickson holotype Immel inner Kopf Kükenthal length Leptogorgia Lovenula male margin material Maxillarpalpen Maxilliped Natal Orphnurgus outer Paracrioceras Paradiaptomus Paramelita paratypes pedicels peduncle Pereopod plates Polyps posteriorly R.V. Meiring Naude references ribs Riccardi rods Sardinia Bay Sarkar scales schwarz sclerites segments setae setose Simpsonella South African Museum southern Africa specimens spicules spindles spines Stiasny SUID-AFRIKAANSE MUSEUM synonym Synonymy tabarelli Théel Thomel Thomson trace fossils Transkei trituberculate tuberculate Type species Uropod ventral ventrolateral Verrill whorls Wright & Studer yrigoyeni Leanza zulu Zululand