Parent taxon: Cyathocrinida according to W. I. Ausich 1998
See also Rozhnov 2018, Ubaghs et al. 1978 and Webster et al. 1999
Sister taxa: Codiacrinacea, Codiacrinoidea, Cyathocrinitoidea, Gasterocomoidea, Hypocrinacea, Parastephanocrinus
Subtaxa: Cupressocrinitidae Gasterocomidae Petalocrinidae Sphaerocrinidae
Type: Gasterocoma
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Devonian of Antarctica (2 collections), Australia (2), Belgium (1), Canada (7: Ontario, Yukon), Czechia (2), France (2), Germany (7), South Africa (1), United States (16: Alaska, Indiana, Nevada, New York), Vietnam (1), Western Sahara (1)
• Silurian of Canada (2: British Columbia), China (6), the United Kingdom (2), United States (17: Indiana, Iowa, Missouri, Nebraska, Tennessee)
• Ordovician of China (1)
Total: 70 collections including 81 occurrences