|| Zaklinskaya,E.D. Description of some species of pollen and spores recovered from Tertiary deposits of Pasekovo Quarry, Voronezh District.
|| Frantz,U. Investigation of the spore and pollen flora of the Pliocene of Willershausen
|| Shchekina,N.A. Flora of Brown Coal and Carbonaceous Clays from the Lower Part of the Poltava Suite of the environs of Kiev by spore Nd pollen analysis