FIG. 8 in Radiolarian biostratigraphy of Paleogene deposits of the Russian Platform (Voronesh Anticline)

FIG. 8. — Early Eocene (3, 5-7, 9, 11-15) and middle-late Eocene (1, 2, 4, 8) Radiolarian association, Petropavlovka Village, Well 730, interval 44.3 m; A, Triactis triactis (Ehrenberg, 1873); B, D, Thecosphaera rotunda Borisenko, 1960; C, Heterosestrum formosum trispinum (Tochilina, 1972) emend.; E, I, Lithocyclia sp.; F, G, Periphaena heliasteriscus (Clark & Campbell, 1942); H, Stylodictya targaeformis (Clark & Campbell, 1942); J, Velicucullus sp. aff. oddgurneri Bjørklund, 1976; K, O(?), Spiromultitunica sp. aff. Prunopyle hayesi Chen, 1975; L, M, Spongoprunum (?) probus (Rüst, 1888); N, Hexacontium (?) sp. Scale bars: 100 µm.