The dinoflagellate cysts Boreocysta isfjordica sp. nov. and Gongylodinium acmeum sp. nov. from the Valanginian of Spitsbergen are described and the new combinations Cribroperidinium spinoretiulatum and Cyclonephelium cuculliforme are proposed. Some taxonomic and biostratigraphic comments on other taxa from the Lower Cretaceous of Spitsbergen are also presented.
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Nils Århus (1992) studied this question.
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