Author	Siegl-Farkas, A.
Year	1997
Journal	Acta Geologica Hungarica Vol. 40/1, pp. 73-100 (1997).Acta Geologica Hungarica Vol. 40/1, pp. 73-100 (1997).
Title	Dinoflagellate stratigraphy of the Senonian formations of the Transdanubian Range.

Abstract Siegl-Farkas, A., 1997. Dinoflagellate stratigraphy of the Senonian formations of the Transdanubian Range. Acta Geologica Hungarica Vol. 40/1, pp. 73-100 (1997). The dinoflagellate stratigraphy presented here for the first time assigns the Senonian marine formations of the Transdanubian Range to two assemblage zones and, within them, to six subzones: - Odontockitina operculata Assemblage Zone: Subzone-1, Apteodinium deflandrei, Tarsisphaeridiumgeminiporatum, and Dinogymnium digitus subzones; - Pyxidinopsis bakonyensis Assemblage Zone: Manumiella div. sp. and Pterodinium cingulatum-lsabelidinium bakeri subzones. On the basis of the correlation with the nannoplankton zonation (CC16-CC22c), the marine formations were deposited in the time interval between the Late Santonian and Late Campanian. The common boundary of the two dinoflagellate assemblage zones coincides with the boundary of nannozones CC21-CC22, which may provide a reliable basis for further correlations. Based upon the investigation of the dinoflagellate associations, the deposition of the Senonian marine formations took place in shallow marine, outer and inner shelf enviromnents as well as in an environment of oceanic influence - simultaneously with the gradual expansion of Tethys.