KHURSEVICH, Galina K., Eugene B. KARABANOV, Alexander A. PROKOPENKO, Douglas F. WILLIAMS, Mikhail I. KUZMIN, & Svetlana A. FEDENYA 2001 Biostratigraphic significance of new fossil species of the diatom genera Stephanodiscus and Cyclotella from upper Cenozoic deposits of Lake Baikal, Siberia Micropaleontology 47(1): 47-71, 3 text-figs., 11 pls.