Radiolaria - Nassellaria

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

Sister taxa: Bekomidae, Eucyrtidiidae, Eucyrtiidae, Lophocyrtiidae, Pseudodictyomitridae, Theocotylidae, Xitidae

Subtaxa: Birkenmajeria, Obeliscoites, Olanda

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Ecology: passively mobile planktonic omnivore