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Nazarov and Ormiston 1984


Plate V
1-3 Tetracircinata reconda gen. et sp. nov. (1,3 x100, 2 95); 4,5 Triactofenestrella nicolica, gen. et sp. nov. (4 x25, 5 x95); 6 Polyentactinia aranaeosa sp. nov., 98; 7 Tetratormentum narthecium Nazarov et Ormiston, x175; 8 Quadrirema gliptoacus Nazarov et Ormiston, x50; 9 Quadrirema sp., x98; 10 Polyfistula longiquitas gen et sp. nov., x55; 11 Ruzhencevispongus cataphractus Nazarov et Ormiston, x350.
Figs. 1-3, 6, 8-11 Early Permian, Southern Urals, Ural River, Donskoe Village. Figs. 4, 5, 7 Late Carboniferous, Southern Urals, Ural River, Nikolsky Village.