†order Troosticrinida Bather 1900 (blastoid)
Parent taxon: Spiraculata according to J.A. Waters and A.S. Horowitz 1993
See also Webster et al. 2009
Sister taxa: Kadiskoblastus, Malchiblastus, Monoblastus, Monoschizablastus, Nucleocrinida, Pentremitida, Tanablastus, Uyguroblastus, Xinjiangoblastus
Subtaxa: Diploblastidae Troosticrinidae
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Carboniferous of Canada (1: Alberta collection), China (2), United States (39: Alabama, Illinois, Indiana, Iowa, Kentucky, Missouri, Montana)
• Devonian of Spain (1), United States (1: Montana)
• Silurian of United States (4: Indiana, Kentucky, Missouri, Tennessee)
Total: 48 collections including 50 occurrences