Abstract: The stratigraphy of the Neogene basin between Çankırı ,and Kalecik has been studied by vertebrate fossils ,and pollen determinations.In the region studied Neogene is represented by the Middle Miocene ,and Pliocene series. The Middle Miocene seriesconsists of two fossiliferous parts. The lower part of this is characterized by Anchitherium aurelianense CUVIER, Micromeryx flourensianus LARTET, Ustriodon splendens MAYET ,and the upper part by Amphicyon major BLAINVILLE,Trilophodon angustidens CUVIER fossils. Trilopmo don pentelicus LARTET, Hipparion gracile KAUP, Gazella gaudryiSCHLOSSER, Paleoreas lindermayeri GAUDRY, Tragoceros amaltheus ROTH et WAGNER are collected from the LowerPliocene series. The Neogene lagoon is bordered by this studies. The correlation of the species found in Turkey with thoseof Asia and Europe shows that the similar species existed in these places.