Eumetazoa - Triploblastica

Parent taxon: Ecdysozoa according to J. Zrzavy et al. 1998

Sister taxa: Cephalorhyncha, Nematozoa, Panarthropoda

Subtaxa: Eognathacantha, Paucijaculum, Protoconodonta, Protoconodontida, Titerina

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Ecology: nektonic carnivore