Citations total:
link From To Geolocation Author - title Year
details Oligocene Early Miocene USSR(Ukrainian SSR) Rotman,R.N. Spore-pollen composition of the Brown Coals of the Chesterintzy deposits of the Knieper Basin of USSR 1956
details Middle Oligocene Late Oligocene USSR(Primorsk Kray) Akhmeteev,M.A. The Oligocene and Miocene floras in the Soviet South Far East as indicators of climatic environments 1974