Full reference: W. I. Ausich. 1998. Phylogeny of Arenig to Caradoc crinoids (Phylum Echinodermata) and suprageneric classification of the Crinoidea. The University of Kansas Paleontological Contributions, n. s. 9:1-36
Parent taxon: Disparida according to D. F. Wright et al. 2017
See also Ausich 1998, Ausich and Copper 2010 and Ausich et al. 2018
Sister taxa: Allagecrinacea, Allagecrinoidea, Alphacrinidae, Anomalocrinacea, Athenacrinidae, Aureocrinus, Belemnocrinoidea, Brutopisocrinus, Calceocrinacea, Calceocrinida, Changninocrinus, Cincinnaticrinacea, Claviculacrinus, Eocicerocrinus, Eustenocrinida, Gongrocrinus, Heracrinus, Heterocrinacea, Heterocrinidae, Heterocrinoidea, Homocrinacea, Homocrinida, Junocrinus, Macnamaratylus, Maennilicrinida, Myelodactylacea, Paradoxocrinidae, Pariocrinus, Perittocrinacea, Perritocrinus, Pisocrinacea, Pisocrinida, Pisocrinoidea, Regnellicrinus, Resetocrinus, Tetragonocrinida, Tornatilicrinidae, Westheadocrinus, Xisoallogecrinus
Subtaxa: Iocrinidae Myelodactylidae
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Devonian of Australia (1 collection), the Czech Republic (1), France (2), the Russian Federation (1), United States (2: New York, Tennessee)
• Silurian to Devonian of United States (1: Oklahoma)
• Silurian of Canada (11: Quebec), the Czech Republic (1), Norway (1), Sweden (2), the United Kingdom (2), United States (32: Illinois, Indiana, Iowa, Missouri, New York, Ohio, Oklahoma, Tennessee, West Virginia, Wisconsin)
• Letna of the Czech Republic (1)
• Volkhov of the Russian Federation (1)
• Ordovician of Canada (3: Ontario), China (1), the Czech Republic (1), Estonia (32), Italy (2), Latvia (3), Portugal (1), the Russian Federation (1), Spain (2), Sweden (1), the United Kingdom (7), United States (68: Illinois, Iowa, Indiana, Iowa, Kentucky, New York, Ohio, Oklahoma, Pennsylvania)
Total: 181 collections including 202 occurrences