PLATE 81.
Upper Devonian: fig. 1 - Upper Frasnian; fig. 2-4 - Middle Frasnian, Domanik Formation; fig. 5, 6 - Famennian; fig. 7-10 - Lower Permian, Artinskian Stage, Aktastinian Substage. The Ukhta River, sampling site no. 1, sample 7001: fig. 1; borehole Shuda-Yag-1003: fig. 3-4 - sample 73 (depth 71.4-71.9 m); borehole Zapadnaya Lekkeyaginskaya-65: fig. 5, 6 - sample 86g (depth 2460-2467 m); South Urals, the Ural River, Village Donskoye: fig. 7-10 (Nazarov, 1988).
Fig. 1. Helioentactinia stellaepolus Aitchison, FF-P001/046-13729 (bar=50µm).
Fig. 2-4. Helioentactinia unimana (Nazarov), FF-P001/060-08728, 2 - (=63µm), 3 - detail (=20µm), 4 - detail (=33µm).
Fig. 5, 6. Helioentactinia valavica Nazarov et Ormiston, FF-P001/123-12806, 5 - (=50µm), 6 - detail (=23µm).
Fig. 7-10. Multisphaera impersepta Nazarov et Afanasieva: 7 - holotype, GIN-4673/208-174 (=167µm); 8 - GIN-4673/208-173 (=125µm); 9, 10 GIN-4673/208-61, 9 - detail (=33µm), 10 - detail (=17µm). |
