†unranked clade Scalidophora
Parent taxon: Ecdysozoa according to T. H. P. Harvey and N. J. Butterfield 2017
See also Edgecombe et al. 2011, Zhang et al. 2015 and Zrzavy et al. 1998
Sister taxa: Cephalorhyncha, Cycloneuralia, Nematozoa, Palaeoscolecida, Panarthropoda
Subtaxa: Chaetognatha Eokinorhynchus Eopriapulites Kinorhyncha Loricifera