†superfamily Pirasocrinoidea Moore and Laudon 1943 (Sea lily)
Parent taxon: Dendrocrinida according to G. D. Webster et al. 2009
Sister taxa: none
Subtaxa: none
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Melekhovian of United States (2: Nebraska collections)
• Permian of Canada (1: British Columbia), the Russian Federation (1), United States (4: Nevada, Texas)
• Carboniferous of Brazil (1), China (1), United States (41: Arizona, Arkansas, Illinois, Iowa, Kansas, Kentucky, Nebraska, Oklahoma, Texas)
Total: 51 collections including 89 occurrences