Parent taxon: Eucladida according to Y. Y. Mao et al. 2018
See also Ausich and Cournoyer 2019
Sister taxa: Articulata, Cyathoformes
Subtaxa: Aesiocrinus Agassizocrinus Amabilicrinus Ampelocrinus Anobasicrinus Aphelecrinus Arkacrinus Basleocrinus Blothrocrinus Botryocrinidae Bursacrinus Cadocrinus Calceolispongia Cercidocrinus Clathrocrinus Corematocrinus Corythocrinus Cricocrinus Cromyocrinus Cupressocrinites Cymbiocrinus Decadocrinus Delocrinus Diphuicrinus Eupachycrinus Exocrinus Galateacrinus Glossocrinus Graphiocrinus Hydreionocrinus Laudonocrinus Lophocrinus Pachylocrinus Paradelocrinus Pelecocrinus Phanocrinus Pirasocrinus Plicodendrocrinidae Rhenocrinus Rutkowskicrinus Scotiacrinus Scytalocrinus Sellardsicrinus Sostronocrinus Spaniocrinus Stachyocrinus Staphylocrinus Stellarocrinus Sundacrinus Texacrinus Timorechinus Tribrachyocrinus Trimerocrinus Zeacrinites
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Melekhovian of United States (1: Nebraska collection)
• Permian of Australia (68), Azerbaijan (1), Bolivia (1), Indonesia (13), New Zealand (2), Oman (5), the Russian Federation (1), Thailand (1), United States (10: Kansas, Nebraska, Nevada, Oklahoma, Texas)
• Carboniferous to Permian of United States (2: Utah)
• Carboniferous of Canada (2: Alberta, Nunavut), China (2), India (1), Iran (4), the Russian Federation (1), the United Kingdom (9), United States (198: Alabama, Arizona, Arkansas, Illinois, Indiana, Iowa, Kansas, Kentucky, Michigan, Missouri, Montana, Nebraska, Nevada, Oklahoma, Pennsylvania, Tennessee, Texas, Utah, Virginia)
• Couvinien of Germany (1), United States (1: Kentucky)
• Devonian of Antarctica (2), Australia (5), Canada (4: Ontario), China (3), Czechia (2), France (2), Germany (8), Mongolia (1), Poland (5), the Russian Federation (6), Spain (1), Tajikistan (5), United States (54: Colorado, Indiana, Iowa, Kentucky, Michigan, New York, Ohio), Vietnam (1)
• Silurian of Canada (3: Quebec), United States (1: New York)
Total: 427 collections including 746 occurrences