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New palynological analyses of material from 11 offshore wells on the Canadi...
New palynological analyses of material from 11 offshore wells on the Canadian Margin and six on the West Greenland Margin has led to a new event-biostratigraphic framework for Cretaceous'Cenozoic strata of the Labrador Sea-Davis Strait-Baffin Bay (Labrador-Baffin Seaway) region. This framework is based on about xx dinoflagellate cyst taxa and smaller numbers of acritarch, algal and fungal and plant microfossils, almost all miospores. In the systematics we include two new genera of dinocysts (Scalenodinium and Taurodinium), 15 new species of dinocysts (Chiropteridium gilbertii, Chytroeisphaeridia hadra, Cleistosphaeridium elegantulum, Cleistosphaeridium palmatum, Dapsilidinium pseudoinsertum, Deflandrea borealis, Evittosphaerula? foraminosa, Ginginodinium? flexidentatum, Hystrichosphaeridium quadratum, Hystrichostrogylon digitus, Impletosphaeridium apodastum, Surculosphaeridium convocatum, Talladinium pellis, Taurodinium granulatum and Trithyrodinium conservatum), three emendations of dinocyst genera (Chiropteridium, Isabelidinium and Surculosphaeridium), five new combinations for dinocyst species (Alterbidinium biaperturum, Deflandrea majae, Kleithriasphaeridium mantellii, Sepispinula? insolita and Spongodinium grossum), one new species of acritarchs (Fromea quadrangularis), one new species of miospores (Baculatisporites crenulatus) and one new combination for miospores (Tiliaepollenites crassipites). Most of the taxa included provide age information, almost exclusively last appearance datums ('tops' or extinction events), but some are useful mainly for environmental interpretations. Collectively, they provide a powerful tool for helping to establish the geological history of the Labrador-Baffin Seaway.
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