Ceratocyrtis sp.

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 : 27

Ceratocyrtis sp. aff. Helotholus amplus Popofsky, 1908 ( Fig. 15J, K )

(?) Helotholus amplus Popofsky, 1908: 283 , pl. 34, fig. 3. — Petrushevskaya 1975: 590, pl. 11, figs 3-6, 13; pl. 19, fig. 2; pl. 44, fig. 4; 1986: pl. 1, figs 2, 4.

GEOGRAPHIC DISTRIBUTION. — Of H. amplus: Circum-Antarctic regions; of Ceratocyrtis sp. aff. H. amplus: Voronesh Anticline.

STRATIGRAPHIC RANGE. —Of H. amplus : middle to late Eocene ( Petrushevskaya 1975); of Ceratocyrtis sp. aff. H. amplus : middle to late Eocene (this study).

Figures

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.