Parent taxon: Inadunata according to G. D. Webster et al. 2025
See also Ausich 1986, Ausich 1998, Ausich et al. 1998, Ausich and Copper 2010, Ausich and Roeser 2012, Ausich et al. 2015, Ausich et al. 2007, Ausich et al. 2018, Donovan 1984, Donovan 1986, Donovan 1992, Frest et al. 1979, Mao et al. 2018, Moore and Jeffords 1968, Rozhnov 2016, Sepkoski 2002, Webster and Lane 1987, Webster and Rakhmonov 2009, Webster et al. 2009, Webster and Webster 2012 and Wright et al. 2017
Sister taxa: Cladida, Dicirrocrinus, Disparata, Fistulata, Larviformia, Merocrinidae, Metabolocrinidae, Paractocrinidae, Passalocrinus, Pentamerocrinidae, Poteriocrinidae, Thuringocrinus
Subtaxa: Allagecrinacea Allagecrinoidea Alphacrinidae Anomalocrinacea Athenacrinidae Aureocrinus Belemnocrinoidea Brutopisocrinus Calceocrinacea Calceocrinida Changninocrinus Cincinnaticrinacea Claviculacrinus Dulkumocrinidae Eustenocrinida Gongrocrinus Heterocrinacea Heterocrinidae Heterocrinoidea Homocrinacea Homocrinida Macnamaratylus Maennilicrinida Metabolocrinus Myelodactylacea Myelodactylida Paradoxocrinidae Pentameri Perittocrinacea Perritocrinus Pisocrinacea Pisocrinida Pisocrinoidea Regnellicrinus Resetocrinus Taucatillocrinus Tetragonocrinida Tornatilicrinidae Trichocrinus Xisoallogecrinus