Radionova, E.P. (1987). Morfologiya diatomei roda Cestodiscus iz nizhesrednemiotsenovykh otlozhenii tropicheskoi zony Tikhogo Okeana. [Diatom morphology of the genus Cestodiscus from the lower-middle Miocene deposits of the Pacific tropical zone]. Vprosy Mikropaleontologii, Moskva, 29: 141-154