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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.