PLATE 23.
Porous structura of external skeleton sphere of the subfamilies
Entactiniinae, Astroentactiniinae and Thecentactiniinae
Upper Devonian: fig. 1-5 - Middle Frasnian, Domanik Formation; fig. 6-8 - Famennian. Borehole Shuda-Yag-1003: fig. 1, 3 - sample 68 (depth 73.3-73.5m), fig. 2 - sample 29 (depth 105-106 m), fig. 4 - sample 56 (depth 81.6-83 m), fig. 5 - sample 73 (depth 71.4-71.9 m); borehole Zapadnaya Lekkeyaginskaya-65: fig. 6-8 - sample 86g (depth 2460-2467 m).
1. Polygonal-rounded pores of external skeleton sphere (1-6)
Fig. 1. Borisella pantosompha (Foreman), FF-P001/039-04701 (=17µm).
Fig. 2. Moskovistella victorialis Afanasieva, sp. nov., FF-P001/032-04518 (=15µm).
Fig. 3. Moskovistella khaini Afanasieva, sp. nov, FF-P001/041-04727 (=12µm).
Fig. 4. Moskovistella sincera Afanasieva, sp. nov., FF-P001/109-04609 (=10µm).
Fig. 5. Bientactinosphaera variacanthina (Foreman), FF-P001/015-08817 (=20µm).
Fig. 6. Duplexia biexosphaera (Nazarov), FF-P001/125-12922 (=33µm).
2. Rounded (7) and polygonal-rounded pores (8) of the second skeleton sphere
Fig. 7. Duplexia spinocurva Afanasieva, sp. nov., FF-P001/090-12919 (=37µm).
Fig. 8. Duplexia biexosphaera (Nazarov), FF-P001/125-12929 (=42µm). |
