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Dinoflagellate cysts from an allochthonous block of Nordenskjöld Formation (Upper Jurassic), north-west James Ross Island

Published online by Cambridge University Press:  13 May 2004

Michael G. Snape
Michael G. Snape
Affiliation:
Centre for Palynological Studies, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
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Abstract

An allochthonous block of the Nordenskjöld Formation from north-west James Ross Island, Antarctic Peninsula has yielded a diverse marine palynoflora. Dinoflagellate cyst assemblages from the 185 m thick sequence are described and compared with similar microfloras previously described from Australia, Papua New Guinea and Madagascar. A mid Tithonian (Late Jurassic) age is suggested for the section. One new genus, Helbydinium gen. nov. and four new species, Helbydinium scabratum sp. nov., Leptodinium acneum sp. nov., Leptodinium posterosulcatum sp. nov. and Rhynchodiniopsis foveata sp. nov. are described.

Keywords

Antarctic Peninsuladinoflagellate cystsNordenskjöld FormationTithonian
Type
Research Article
Information
Antarctic Science , Volume 4 , Issue 3 , September 1992 , pp. 267 - 278
Copyright
© Antarctic Science Ltd 1992

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