Radiolaria - Spumellaria - Xiphostylidae

Synonym: Neotripocyclia Pessagno et al. 1989

Parent taxon: Xiphostylidae according to Hull 1997

Sister taxa: Amuria, Archaeocenosphaera, Sinosphaera, Triactoma, Trigonosphaera, Tripocyclia, Xiphostylus, Zanola

Subtaxa: Suna echiodes, Suna harperi

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Ecology: passively mobile planktonic omnivore