Radiolarian biostratigraphy of Paleogene deposits of the Russian Platform (Voronesh Anticline) Author Popova, Irina M. Institute of Geology and Paleontology, University of Lausanne, BFSH- 2 (Switzerland) Irina. Popova @ igp. unil. ch Centro di Studio di Geologia dell’Appennino e delle catene Perimediterranee, via la Pira 4, Firenze (Italy) opova@igp.unil.ch Author Baumgartner, Peter O. Institute of Geology and Paleontology, University of Lausanne, BFSH- 2 (Switzerland) Peter. Baumgartner @ igp. unil. ch aumgartner@igp.unil.ch Author Guex, Jean Institute of Geology and Paleontology, University of Lausanne, BFSH- 2 (Switzerland) Jean. Guex @ igp. unil. ch uex@igp.unil.ch Author Tochilina, Svetlana V. Pacific Oceanological Institute, Vladivostok (Russia) Author Glezer, Zoya I. Union Geological Institute (VSEGEI), Sredny pr. 74, Saint-Petersburg (Russia) text Geodiversitas 2002 24 1 7 59 journal article 10.5281/zenodo.5375608 1638-9395 5375608 Rhopalocanium pyramis ( Haeckel, 1887 ) ( Fig. 9O, P ) Dictyophimus pyramis Haeckel, 1887: 1330 , pl. 68, fig. 7. Rhopalocanium pyramis – Kozlova 1999 : pl. 7, fig. 16. GEOGRAPHIC DISTRIBUTION. — Pacific Ocean, Russian Platform. STRATIGRAPHIC RANGE. — Late Paleocene-Recent ( Haeckel 1887 ; Kozlova 1999 ); (?)late Paleocene-early Eocene (this study).