Composition of Oligocene flora of Dyusembay (Central Kazakhstan) based on palynological data

The site of Dyusembay is located on the left bank of the Uly-Zhilanshik River of Dzhangeldy District of Kostanay Region, Central Kazakhstan. Here we present original palinologycal data for the most complete identification of the taxonomic composition of the flora and its ecological features aimed to the reconstruction of the vegetation of the surrounding area. The age of the studied deposits has been estimated as Late Oligocene. Eocene age is not supported since there are almost no evergreen elements in the composition, with the exception of Ilex and possibly Magnolia. The taxonomic composition of the flora indicates that the vegetation looked like a typical Turgay flora represented by warm-temperate coniferous and broad-leaved forests.