Parent taxon: Disparida according to J. A. Waters et al. 2020
Sister taxa: Allagecrinacea, Alphacrinidae, Anomalocrinacea, Athenacrinidae, Aureocrinus, Belemnocrinoidea, Brutopisocrinus, Calceocrinacea, Calceocrinida, Changninocrinus, Cincinnaticrinacea, Claviculacrinus, Eocicerocrinus, Eustenocrinida, Gongrocrinus, Heracrinus, Heterocrinacea, Heterocrinidae, Heterocrinoidea, Homocrinacea, Homocrinida, Junocrinus, Macnamaratylus, Maennilicrinida, Myelodactylacea, Myelodactylida, Paradoxocrinidae, Pariocrinus, Perittocrinacea, Perritocrinus, Pisocrinacea, Pisocrinida, Pisocrinoidea, Regnellicrinus, Resetocrinus, Tetragonocrinida, Tornatilicrinidae, Westheadocrinus, Xisoallogecrinus
Subtaxa: none
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Permian of Australia (5 collections), Italy (1), Thailand (1), United States (2: Nevada, Oklahoma)
• Carboniferous of the United Kingdom (3), United States (28: Illinois, Indiana, Kansas, Missouri, Montana, Nebraska, Oklahoma, Tennessee, Texas)
• Devonian of Mongolia (1), United States (7: Missouri, New York), Uzbekistan (1)
• Silurian of United States (2: Missouri)
Total: 51 collections including 75 occurrences