Order Isocrinida Sieverts-Doreck 1952 (Sea lily)
Parent taxon: Articulata according to D. F. Wright et al. 2017
See also Ausich 1998, Hess and Messing 2011, Jäger 1985, Rasmussen 1961, Sepkoski 2002 and Stilwell et al. 1994
Sister taxa: Bihaticrinus, Comatulida, Corythocrinus, Cratecrinus, Cyclocrinidae, Cyrtocrinida, Encrinida, Holocrinida, Hyocrinida, Lanternocrinidae, Leocrinidae, Millericrinida, Qingyanocrinidae, Roveacrinida, Taurocrinus, Tulipacrinidae, Uintacrinida
Subtaxa: Echicrinus Isocrinina Pentacrinitina Polycerus Siliesiacrinus
Ecology: stationary epifaunal suspension feeder