†order Troosticrinida Bather 1900 (blastoid)

Blastoidea - Troosticrinida

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

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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

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