The Oligocene to Early Miocene diverse flora silicoflagellates (Dictyochophyceae) included 40 specific and intraspecific taxa belong to 9 genera have found in sediments of the submarine Vityaz Ridge. The silicoflagellate assemblages corresponded to the Early Oligocene Dictyocha deflandrei Zone, the Late Oligocene Naviculopsis biapiculata Zone, and the Early Miocene N. lata Zone were identified. The silicoflagellate assemblage description and their correlation with zonal diatom assemblages are given. 27 silicoflagellate taxa are illustrated.

Keywords: Dictyochales, silicoflagellates, diatoms, Oligocene, Early Miocene, submarine Vityaz Ridge, Kuril-Kamchatka Trench

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