Dinoflagellate cysts from the Marambio Group (Upper Cretaceous) of Humps Island

Thirty samples from two sections on south-western Humps Island, James Ross Basin, northern Antarctic Peninsula, contain moderately diverse dinoflagellate cyst assemblages deposited in shallow shelf, open marine conditions. Assemblages contain common Isabelidinium spp., including I. cretaceum and I....

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Bibliographic Details
Published in:Antarctic Science
Main Authors: Wood, Susan E., Askin, Rosemary A.
Format: Article in Journal/Newspaper
Language:unknown
Published: Cambridge University Press 1992
Subjects:
Antarctic
Antarctic Peninsula
New Zealand
Marambio
Humps
Humps Island
Antarc*
Antarctic Science
Online Access:http://nora.nerc.ac.uk/id/eprint/519115/
https://doi.org/10.1017/S0954102092000488
Description
Summary:Thirty samples from two sections on south-western Humps Island, James Ross Basin, northern Antarctic Peninsula, contain moderately diverse dinoflagellate cyst assemblages deposited in shallow shelf, open marine conditions. Assemblages contain common Isabelidinium spp., including I. cretaceum and I. pellucidum, Cerodinium diebelii, common Odontochitina spp., including O. operculata, O. porifera and O. spinosa, plus Nelsoniella cf. aceras, Octodinium askiniae and rare Chatangiella tripartita, C. victoriensis, Isabelidinium cf. belfastense and I. korojonense. This association includes species with Santonian and Campanian (to Maastrichtian) distribution in Australia and New Zealand. Some of these species may be recycled. A Campanian age is suggested for the Humps Island sections.

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