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Dinocysts from Upper Cretaceous deep-water marine variegated facies (Malinowa Shale Formation), Pieniny Klippen Belt, Poland: example from the Potok Trawne creek

Gedl P.

Studia Geologica Polonica

2007

Vol. 127

139-152

Dinocysts have been described for the first time from Upper Cretaceous deep-water marine variegated deposits of the Pieniny Klippen Belt, Poland. They have been found in the Malinowa Shale Formation (Grajcarek Succession) exposed at the Potok Trawne creek. Latest Turonian-Coniacian dinocysts occur in dark-coloured shale intercalations. Their assemblage consists mainly of well preserved small peridinioids (Palaeohystrichophora infusorioides and Alterbidinium sp.) and gonyaulacoids (Pterodinium and Spiniferites). Their motile stages inhabited offshore waters of the Magura Basin during Late Cretaceous. Dominance of peridinioids may indicate eutrophic conditions in the photic zone of the offshore waters induced by upwelling.