The new mammal locality of Akkasdagi yielded a rich fauna dated as Middle Turolian. It is situated in the southern part of the Cankiri-Corum Basin in central Anatolia. In the Akkasdagi area, the sedimentary deposits, mapped as the Kizilirmak Formation, consist of tuffs and lacustrine limestones intercalated with clastic deposits, whilst in its type section, situated to the north near Kizilirmak town, this formation is mainly formed of fluviatile deposits. Facies distribution and geological observations led to conclude that during the Miocene, depositional centers migrated from the north to the south of this basin.
Le nouveau gisement de mammiferes a Akkasdagi, au sud du bassin de Cankiri-Corum (Anatolie centrale), a livre une abondante faune datee du Turolien moyen. Dans le secteur d'Akkasdagi, la serie sedimentaire attribuee a la formation de Kizilirmak comporte une succession de tufs et de calcaires lacustres, intercales dans les sediments detritiques. Cette succession differe de celle de la coupe type, situee plus au nord, qui est dominee par des depots fluviatiles. Les observations geologiques montrent qu'au cours du Miocene, le centre de sedimentation a migre du nord vers le sud.