Radiolaria - Polycystina

Parent taxon: Polycystina according to P. De Wever et al. 2001

Sister taxa: Aitchisonellum, Albaillellaria, Archaeospicularia, Entactinaria, Latentifistularia, Nassellaria, Protobiramus, Spongomassa, Spumellaria

Subtaxa: Collosphaeridae, Sphaerozoidae, Thalassosphaeridae

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Ecology: passively mobile planktonic omnivore