Infraclass Inadunata Wachsmuth and Springer 1897 (Sea lily)
Parent taxon: Pentacrinoidea according to G. D. Webster et al. 2025
See also Ausich et al. 2018, Brower et al. 2024, Burke 1977, Donovan 1984, Donovan 1986, Frest et al. 1979, Haugh 1979, Mao et al. 2018, Parsley 1981, Regnell 1948, Wright et al. 2017 and Wright et al. 2019
Sister taxon: Apektocrinus
Subtaxa: Cladida Dicirrocrinus Disparata Disparida Fistulata Larviformia Merocrinidae Metabolocrinidae Paractocrinidae Passalocrinus Pentamerocrinidae Poteriocrinidae Thuringocrinus
Ecology: stationary upper-level epifaunal suspension feeder