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Afanasieva 2000


PLATE 18.
Structura of spines of the subfamily
Astroentactiniinae, Pseudorotasphaerinae, Entactiniinae and Helioentactiniinae
Upper Devonian: fig.1, 2, 4-6, 8 - Middle Frasnian, Domanik Formation; fig. 3, 7 - Upper Frasnian. Borehole Shuda-Yag-1003: fig. 1, 2 - sample 34 (depth 104.1-104.6 m), fig. 4, 5 - sample 29 (depth 105-106 m), fig. 8 - sample 72 (depth 71.9-72.4 m); the Ukhta River: fig. 3, 7 - sampling site no. 1, sample 7001; fig. 6 - sampling site no. 4, sample V-29.

1. Spines with Y-shaped middle (1-3) and basal (4, 5) cross-section
Fig. 1, 2. Moskovistella octoradiata Afanasieva, sp. nov., FF-P001/114-11001: 1 - (bar=15m), 2 - detail (=7m).
Fig. 3-5. Russirad kazintsovae Afanasieva, sp. nov.: 3 - FF-P001/026-13904 (=15m);
4, 5 - FF-P001/026-04524, 4 - (=15m), 5 - detail (=7m).

2. Spines with subsquare basal cross-section (6-8)
Fig. 6. Apophysisphaera profundisculus (Aitchison), FF-P001/118-13121 (=18m).
Fig. 7. Borisella maksimovae Afanasieva, sp. nov., FF-P001/036-13909 (=15m).
Fig. 8. Helioentactinia aster Aitchison, FF-P001/055-08508 (=4m).