Alternative spelling: Cladoidea
Parent taxon: Inadunata according to D. F. Wright et al. 2017
See also Ausich 1998, Ausich et al. 1998, Ausich and Copper 2010, Ausich and Cournoyer 2019, Ausich et al. 2007, Ausich et al. 2019, Ausich et al. 2018, Brower et al. 2024, Burke 1977, Ciampaglio et al. 2007, Haugh 1979, Mao et al. 2018, Moore and Jeffords 1968, Moore and Laudon 1943, Ramsbottom 1958, Sepkoski 2002, Webster et al. 1999, Webster and Lane 1987, Webster and Lane 2007, Webster et al. 2009, Webster and Webster 2012 and Wright et al. 2019
Sister taxa: Dicirrocrinus, Disparata, Disparida, Fistulata, Larviformia, Merocrinidae, Metabolocrinidae, Paractocrinidae, Passalocrinus, Pentamerocrinidae, Poteriocrinidae, Thuringocrinus
Subtaxa: Aaglacrinus Aithriocrinus Ampelocrinida Apektocrinidae Bicidiocrinus Briseocrinus Cathetocrinus Contignatindocrinus Cromyocrinacea Cyathocrinacea Dendrocrinina Dimerocrinites anticostiensis Eopilidiocrinus Eucladida Flexibilia Goniocrinus Harmostocrinus Idaeumocrinus Kanabinocrinus Kansacrinus Kooptoonocrinus Lanecrinus Lekocrinus Lophocrinacea Manicrinus Mathericrinus Menniscocrinus Miatschkovocrinus Nacocrinus Nuxocrinus Parascytalocrinus Porocrinoidea Poteriocrinitina Premanicrinus Pskovicrinus Pulaskicrinus Pumilindocrinus Pyrenocrinus Rimosidocrinus Saccosompsis Sardinocrinus Scammatocrinus Texacrinacea Treocrinus Wetherbyocrinus Worthenocrinus
Ecology: stationary intermediate-level epifaunal suspension feeder