Bientactinosphaera grandis, from Afanasieva et al. (2005).

Belongs within: Entactiniidae.

Bientactinosphaera is a Palaeozoic genus of radiolarians characterised by a spherical shell comprising two porous spheres.

Bientactinosphaera Afanasieva 2000 [=Entactinosphaera Foreman 1963 (nom. inv.)]AA05
    |--B. australisAA05
    |--B. conglobataAA05
    |--B. grandis (Nazarov 1975) [=Entactinosphaera grandis]AA05
    |--B. guangxiensisAA05
    |--B. maslakovaeAA05
    |--B. miletenkoiAA05
    |--B. morozoviAA05
    |--B. obtusaAA05
    |--B. pinicaAA05
    |--B. spinofoliaceaAA05
    |--B. strangulataAA05
    |--B. symphyporaAA05
    `--B. variacanthina (Foreman 1963) [=Entactinosphaera variacanthina]AA05

*Type species of generic name indicated


[AA05] Afanasieva, M. S., E. O. Amon, Y. V. Agarkov & D. S. Boltovskoy. 2005. Radiolarians in the geological record. Paleontological Journal 39 (Suppl. 3): S135–S392.

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