Lithostratigraphic units (formation, strata, and beds) and regional stages of the Oligocene-lower Miocene succession of southern Ukraine are described based on the results of comprehensive lithological and paleontological data analysis. The historical perspective on the stratigraphical investigations of the Maikop Group in the Crimean and Kerch Peninsulas and their equivalents in the broader Peri-Black Sea Region were also integrated in this overview. Moreover, a correlation was established between the locally defined regional stages and specific stratigraphic horizons of southern Ukraine, the global Oligocene and Miocene stages (defined by the International Stratigraphic Chart), and the stages of the Eastern Paratethys. | Turkish Journal of Earth Sciences Turkish J Earth Sci 2020 29 170-207 http earth TÜBİTAK Research Article doi yer-1905-24 The stratigraphy of the Oligocene-lower Miocene deposits of southern Ukraine Yuliia V. VERNYHOROVA Tamara S. RYABOKON Department of Stratigraphy and Paleontology of the Cenozoic Deposits Institute of Geological Sciences National Academy of Sciences of Ukraine Kyiv Ukraine Received Accepted Published Online Final Version Abstract Lithostratigraphic units formation strata and beds and regional stages of the Oligocene-lower Miocene succession of southern Ukraine are described based on the results of comprehensive lithological and paleontological data analysis. The historical perspective on the stratigraphical investigations of the Maikop Group in the Crimean and Kerch Peninsulas and their equivalents in the broader Peri-Black Sea Region were also integrated in this overview. Moreover a correlation was established between the locally defined regional stages and specific stratigraphic horizons of southern Ukraine the global Oligocene and Miocene stages defined by the International Stratigraphic Chart and the stages of the Eastern Paratethys. The Planorbellian regional stage early Rupelian includes the Borysfen Planorbella Indol and Eastern-Kerch Formations and Diurmen Beds. The Molochnian regional stage late Rupelian includes the Molochna and Azamat Formations and the Kop-Takil Strata. The Kerleutian regional stage latest Rupelian-Chattian includes the Kerleut Sirohozy Askaniia and Hornostaivka Formations and the Chorelek and Clay Stratum. The Bathysiphonian regional horizon Aquitanian Burdigalian includes the Arabatska Alahol Chornobaivka and Mayachka Formations and the Karha Beds. This horizon is also considered as age-equivalent to the Caucasian Sakaraulian and Kotsakhurian regional stages of the lower Miocene in the Eastern Paratethys. The Oligocene-early Miocene age of all these .