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Afanasieva 2000


PLATE 6.
Inner framework, the first inner sphere and initial stage of main spine formation of the subfamily Bientactinosphaerinae
Upper Devonian, Middle Frasnian, Domanik Formation. Borehole Shuda-Yag-1003: fig. 1, 2, 5, 6 - sample 72 (depth 71.9-72.4 m), fig. 3 - sample 56 (depth 81.6-83 m), fig. 4 - sample 78 (depth 68.4-69.3 m), fig. 7 - sample 73 (depth 71.4-71.9 m).

Fig. 1, 2. Bientactinosphaerapinica Afanasieva, sp. nov.: 1, 2 - FF-P001/045-08604, 1 - detail (=15Ám), 2 - (=50Ám).
Fig. 3. Bientactinosphaera symphypora (Foreman), FF-P001/135-04608 (=10Ám).
Fig. 4. Ornatoentactinia solita Afanasieva, sp. nov., FF-P001/043-05008 (=18Ám).
Fig. 5, 6. Ornatoentactinia beljaevorum Afanasieva, sp. nov., FF-P001/100-08516, 5 - (=17Ám), 6 - (=4Ám).
Fig. 7. Bientactinosphaera morozovi Afanasieva, sp. nov., FF-P001/116-11616 (=15Ám).