Periphaena heliasteriscus ( Clark & Campbell, 1942 )

Popova, Irina M., Baumgartner, Peter O., Guex, Jean, Tochilina, Svetlana V. & Glezer, Zoya I., 2002, Radiolarian biostratigraphy of Paleogene deposits of the Russian Platform (Voronesh Anticline), Geodiversitas 24 (1), pp. 7-59 : 41-43

Periphaena heliasteriscus ( Clark & Campbell, 1942) ( Figs 8F, G ; 15O, P )

Heliodiscus heliasteriscus Clark & Campbell, 1942: 39 , pl. 3, figs 10, 11. — Muzylev et al. 1996: 143, fig. 1.

Heliodiscus cf. heliasteriscus – Clark & Campbell 1945: 22, pl. 5, fig. 5.

Heliodiscus pentasteriscus Clark & Campbell, 1942: 39 , pl. 3, fig. 8. — Kozlova 1984: 284, pl. 10, fig. 11.

Periphaena heliasteriscus – Sanfilippo & Riedel 1973: 523, pl. 9, figs 1-6, pl. 27, figs 8-10. — Takemura 1992: 743, pl. 4, fig. 13. — Khokhlova et al. 1994: 228, pl. 13.7, fig. 8. — Kozlova 1999: 87, pl. 34, figs 2, 11, 12; pl. 40, fig. 4.

GEOGRAPHIC DISTRIBUTION. — Southern Indian Ocean, California, Mexico basin, Western Siberia, eastern slope of the Ural Mountains, Turkmenistan, Russian Platform, southern part.

STRATIGRAPHIC RANGE. — Eocene (Kozlova & Gorbovets 1966; Sanfilippo & Riedel 1973); middle Eocene ( Clark & Campbell 1942, 1945; Blueford & White 1984); middle Eocene-late Oligocene, Southern Indian Ocean ( Takemura 1992), middle-upper Eocene, Mediterranean ( Khokhlova et al. 1994); middle-upper Eocene, Fergansk depression ( Muzylev et al. 1996); Paleocene-Eocene ( Kozlova 1999); (?)late Paleocenelate Eocene (this study).

Figures

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.

FIG. 15. — Middle-early late Eocene Radiolarian association, Sergeevka Village, outcrop 1, interval 14.3-15.5 m; A, Periphaena sp. aff. Heliodiscus hexasteriscus Clark & Campbell, 1942; B, Petalospyris sp.; C, D, Thecosphaera sp. A; E, Phacodiscinus (?) sp.; F, G, Actinommura sp. B; H, Lophocyrtis ex. gr. Theocyrtis andriashevi (Petrushevskaya, 1979); I, Lithomelissa spongiosa Bütschli, 1882; J, K, Ceratocyrtis sp. aff. Helotholus amplus Popofsky, 1908 or Tripodiscinus (?) sp.; L, Phormocyrtis sp. aff. ligulata Clark & Campbell; M, Thecosphaera sp. B; N, Lophocyrtis aspera (Ehrenberg, 1873); O, P, Periphaena heliasteriscus (Clark & Campbell, 1942). Scale bars: 100 µm.