Periphaena decora Ehrenberg, 1873

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

Periphaena decora Ehrenberg, 1873 ( Fig. 17H )

Periphaena decora Ehrenberg, 1873: 246 ; 1875: pl. 28, fig. 6. — Riedel 1957: 258, pl. 62, fig. 1. — Sanfilippo & Riedel 1973: 523, pl. 8, figs 8-10, pl. 27, figs 2-5. — Petrushevskaya & Kozlova 1972: 523, pl. 14, figs 1, 2.

GEOGRAPHIC DISTRIBUTION. — Atlantic Ocean, Gulf of Mexico, Voronesh Anticline.

STRATIGRAPHIC RANGE. — Eocene-Oligocene ( Petrushevskaya & Kozlova 1972); early-middle Eocene ( Sanfilippo & Riedel 1973); (?)late Paleoceneearly Eocene (this study).

REMARKS

The image of Periphaena paleogenica sensu Kozlova (1999: 87 , pl. 13, fig. 4) from early Eocene of Western Siberia is similar to our species.

Figures

FIG. 17. — Early and middle-late Eocene Radiolarians from different localities; A, Druppatractus polycentrus Clark & Campbell, 1942, o/p 294/4, interval 6.3 m; B, Ellipsostylus anisoxyphos Clark & Campbell, 1942, o/p 294/6, interval 8.3 m; C, Hexacontium pachydermum Jørgensen, 1900, well 510C, interval 44.0 m; D, Heterosestrum formosum trispinum (Tochilina, 1972) emend., well 730C, interval 43.7 m; E, Lithomelissa sp. aff. ehrenbergi Bütschli, 1882, well 510C, interval 40.0 m; F, Euscenarium (?) sp., well 730C, interval 44.3 m; G, Theocorys anapographa Riedel & Sanfilippo, 1970, o/p 294/3, interval 5.3 m; H, Periphaena decora Ehrenberg, 1873, well 730C, interval 43.7 m; I, J, Periphaena pentasteriscus (Clark & Campbell, 1942), well 510C, interval 40.0 m; K, Tripocyrtis (?) sp., o/p 294/11, interval 12.8 m; L, Porodiscus charlestonensis Clark & Campbell, 1945, well 510C, interval 44.0 m; M, S, Spongodiscus ex. gr. cruciferus (Clark & Campbell, 1942), well 730C, interval 43.7 m; N, Lithomelissa sp. aff. spongiosa Bütschli, 1882, o/p 294/4, interval 6.3 m; O, Ommatogramma sp. aff. biconstrictus (Lipman, 1953), well 730C, interval 38.8 m; P, Q, Peripyramis magnifica magnifica (Clark & Campbell, 1942), well 730C, interval 43.7 m; R, Prunobrachium (?) sp., well 730C, interval 43.7 m. Scale bar: 100 µm.