Full reference: W. I. Ausich. 1998. Phylogeny of Arenig to Caradoc crinoids (Phylum Echinodermata) and suprageneric classification of the Crinoidea. The University of Kansas Paleontological Contributions, n. s. 9:1-36
Parent taxon: Disparida according to D. F. Wright et al. 2017
See also Ausich 1998, Ausich and Copper 2010 and Ausich et al. 2018
Sister taxa: none
Subtaxa: Acolocrinidae Eustenocrinidae
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Silurian of Canada (3: Ontario, Quebec collections), United States (3: Indiana, New York)
• Dobrotivian of Spain (1)
• Ordovician of Canada (2: Ontario), Estonia (36), United States (8: California, Kentucky, Missouri, Oklahoma)
• Canadian of United States (1: Utah)
Total: 54 collections each including a single occurrence