Parent taxon: Cladida according to G. D. Webster et al. 2025
See also Ausich 1998, Ausich and Copper 2010, Clark and Twitchell 1915, Mao et al. 2018, Webster et al. 1999, Webster et al. 2009, Webster and Webster 2012, Wright et al. 2017 and Wright et al. 2019
Sister taxa: Aaglacrinus, Aethocrinidae, Aithriocrinus, Ampelocrinida, Apektocrinidae, Bicidiocrinus, Briseocrinus, Cathetocrinus, Cromyocrinacea, Cyathocrinacea, Dendrocrinina, Dimerocrinites anticostiensis, Eucladida, Harmostocrinus, Idaeumocrinus, Kanabinocrinus, Kansacrinus, Kooptoonocrinus, Lanecrinus, Lekocrinus, Mathericrinus, Menniscocrinus, Nacocrinus, Nuxocrinus, Parascytalocrinus, Perittocrinus, Porocrinoidea, Poteriocrinitina, Pskovicrinus, Pulaskicrinus, Pyrenocrinus, Rimosidocrinus, Saccosompsis, Sardinocrinus, Scammatocrinus, Treocrinus, Wetherbyocrinus, Worthenocrinus
Subtaxa: Cupulocrinidae Edriocrinidae Icthyocrinus Metichthyocrinus Pinnata Sagenocrinida Taxocrinida Taxocrinoidea
Ecology: stationary intermediate-level epifaunal suspension feeder