Full reference: C. E. Brett, T. J. Frest, J. Sprinkle and C. R. Clement. 1983. Coroniodea: A new class of Blastozoan Echinoderms based on taxonomic reevaluation of Stephanocrinus. Journal of Paleontology 57(4):627-651
Parent taxon: Blastoidea according to J.E. Bauer et al. 2019
See also Sumrall and Waters 2012
Sister taxa: Eublastoidea, Fissiculata, Granatocrinida, Lysocystites, Macurdablastus, Pentremitida, Troosticrinida, Zygocrinus
Subtaxa: Coronata
Distribution:
• Silurian of United States (31: Arkansas, Indiana, Iowa, New York, Tennessee, Wisconsin collections)
• Dobrotivian of Spain (1)
• Letna of the Czech Republic (1)
• Ordovician to Silurian of the United Kingdom (1)
• Ordovician of the Czech Republic (8), Italy (3), Portugal (2), Spain (6), Sweden (2), the United Kingdom (7)
Total: 62 collections including 83 occurrences