Parent taxon: Cladida according to W.I. Ausich et al. 1998
See also Moore and Jeffords 1968, Parsley 1981 and Ubaghs et al. 1978
Sister taxa: Aaglacrinus, Aithriocrinus, Ampelocrinida, Apektocrinidae, Bicidiocrinus, Briseocrinus, Cathetocrinus, Contignatindocrinus, Cromyocrinacea, Cyathocrinacea, 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
Subtaxa: Kophinocrinus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution: