Spongodiscus festivus, 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 : 48-49

Stylotrochus festivus Clark & Campbell, 1942 ( Fig. 10H, K )

Stylotrochus festivus Clark & Campbell, 1942: 48 , pl. 2, figs 5, 8.

Spongotrochus echinodiscus – Clark & Campbell 1942: 48, pl. 2, fig. 3.

Porodiscus compactus Lipman, 1950: 60 , pl. 2, fig. 4.

Spongotrochus (?) sp. – Petrushevskaya & Kozlova 1972: 528, pl. 3, fig. 4, pl. 5, fig. 11.

Spongodiscus alveatus Kozlova, 1984 : pl. XI, fig. 6.

Spongotrochus radiatus Kozlova, 1999: 96 , pl. 9, fig. 5; pl. 11, fig. 11; pl. 13, fig. 8; pl. 41, fig. 4.

GEOGRAPHIC DISTRIBUTION. — California, Turkmenistan, Voronesh Anticline.

STRATIGRAPHIC RANGE. — Middle to latest middle Eocene ( Clark & Campbell 1942; Blueford & White 1984; Blueford 1988); Eocene ( Lipman 1950); (?)late Paleocene-late Eocene (this study).

Figures

FIG. 10. — Early Eocene Radiolarian association, Petropavlovka Village, Well 730, interval 44.3 m; A, B, Periphaena perplexus (Clark & Campbell, 1942); C, F, J, Haliomma (?) faceta (Krasheninnikov, 1960); D, G, Heterosestrum formosum (Tochilina, 1970); E, Periphaena sp. aff. Heliodiscus inca (Clark & Campbell, 1942); H, K, Stylotrochus festivus Clark & Campbell, 1942; I, Heterosestrum (?) sp.; L, M, Amphicraspedium praemurrayanum Kozlova, 1999; N, Ommatogramma biconstrictus (Lipman, 1953). Scale bars: 100 µm.