Clade Spiralia
Parent taxon: Protostomia according to C. Nielsen 2012
See also Edgecombe et al. 2011 and Peterson et al. 2005
Sister taxon: Ecdysozoa
Subtaxa: Brachiozoa Chaetognathifera Gastrotricha Gnathifera Lophotrochozoa Platyzoa Schizocoela Trochozoa