Parent taxon: Dendrocrinida according to G. D. Webster and N. G. Lane 2007
See also Moore and Strimple 1973, Ubaghs et al. 1978 and Webster et al. 2009
Sister taxa: Aesiocrinidae, Agassizocrinoidea, Apographiocrinoidea, Bridgerocrinidae, Cromyocrinoidea, Dendrocrinacea, Erisocrinoidea, Glossocrinacea, Glossocrinidae, Graphiocrinoidea, Kraterocrinidae, Lophocrinoidea, Mastigocrinacea, Mastigocrinoidea, Merocrinacea, Mollocrinoidea, Pentaxocrinus, Pirasocrinoidea, Plicodendrocrinacea, Rutkowskicrinidae, Scytalocrinacea, Scytalocrinoidea, Timorocidaroidea, Zeacrinitoidea, Texacrinoidea
Subtaxa: Adinocrinidae
Type: Pirasocrinus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Carboniferous of the United Kingdom (3 collections), United States (12: Indiana, Kentucky, Tennessee)
Total: 15 collections including 16 occurrences