Parent taxon: Eucamerata according to Y. Y. Mao et al. 2018
See also Ausich 1998, Ausich and Copper 2010, Ausich and Cournoyer 2019, Ausich et al. 2018, Ausich et al. 2007, Brower et al. 2024, Cole 2017, Cole et al. 2017, Guensburg and Sprinkle 2003, Sepkoski 2002, Strimple and McGinnis 1972, Ubaghs et al. 1978, Webster et al. 1999, Webster and Lane 1987, Webster et al. 2009, Webster and Webster 2012 and Wright et al. 2017
Sister taxon: Diplobathrida
Subtaxa: Acrocrinitidae Amarsupiocrinus Amblacrinus Bolicrinus Carpocrinidae Cerasmocrinus Closterocrinus Compsocrinina Delgadocrinidae Dolatocrinicae Eknomocrinidae Eocamptocrinus Eucalyptocrinitidae Exsulacrinus Glaphyocrinus Glyptocrinina Habrotecrinidae Harrelicrinus Hexacriniticae Hyrtanecrinus Ilmocrinus Ivanovaecrinus Lobomelocrinus Marhoumacrinus Marsupiocrinidae Nanicrinus Neocamtocrinus Pandanocrinus Paracrocrinus Paratalarocrinus Patelliocrinidae Phrygilocrinus Praedicticrinus Prokopicrinus Shimantocrinus Struszocrinus Tanaocrinina Xenocrinidae
Ecology: stationary upper-level epifaunal suspension feeder