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Nazarov and Ormiston 1990


Plate II
Silurian-Permian radiolarians.

Fig. 1. Syntagentactinia afflicta Nazarov et Ormiston, sp. nov. Lower Silurian, Mid-Upper Llandovery, Sakmarsk Suite, Southern Urals, Sakmara River, Bolshoe Abishevo Village, x110.

Fig. 2. Polyentactinia circumretia Nazarov et Ormiston, sp. nov. Upper Devonian, Frasnian, Southern Urals, Aktyubinsk region, Aitpaika Creek, x175.

Figs. 3, 4. Ceratoikiscum famenium Nazarov et Ormiston, sp. nov. Upper Devonian, Byelorussia, Pripyat depression. 3 x93, 4 x175.

Fig. 5. Entactinosphaera pulcherima Nazarov et Ormiston, sp. nov. Upper Devonian, Byelorussia, Pripyat depression, x235.

Fig. 6. Polyentactinia njatvica Nazarov et Ormiston, sp. nov. Middle Carboniferous, Moscovian Stage, Northeast of the USSR, Kolyma River, Popovka Creek, x90.

Fig. 7. Helioentactinia ikka Nazarov et Ormiston, sp. nov. Lower Permian, Sakmarian a Stage, Sarabilsk Suite, Southern Urals, Sakmara River, Verkhnaya Chernaya Rechka Village.