TWO NEW GENERA AND SPECIES OF ACRITARCHS FROM THE ALBIAN-CENOMANIAN OF SOUTHWEST WESTERN SIBERIA
Е.S. Razumkova
A.P. Karpinsky Russian Geological Research Institute, St. Petersburg, Russia
Keywords: acritarchs, Albian, Cenomanian, Western Siberia
Abstract
The taxonomic composition of acritarchs from Albian-Cenomanian deposits recovered by boreholes in the southwest of Western Siberia has been studied. Two new genera and species of acritarchs have been described monographically: Pyramidinium annulatum gen. et sp. nov. and Trilobatina angusta gen. et sp. nov. The species P. annulatum is found both in the Albian, Khanty-Mansiysk Formation, and in the Cenomanian, lower part of the Uvat Formation. The second species T. angusta are found only in the Cenomanian, Uvat Formation.
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