Phylum Entoprocta Nitsche 1869
Synonyms: Calyssozoa Clark 1921, Kamptozoa
Parent taxon: Lophotrochozoa according to J. Fuchs et al. 2010
See also Bassler 1953, Edgecombe et al. 2011, Nielsen 2012, Sepkoski 2002 and Zrzavy et al. 1998
Sister taxa: Annelida, Lophophorata, Mollusca, Namacalathus, Tentaculita
Subtaxa: Barentsia Cotyledion