Crinoidea - Monobathrida - Xenocrinidae
Parent taxon: Monobathrida according to W. I. Ausich and M. E. Cournoyer 2019
See also Ausich and Copper 2010, Strimple and McGinnis 1972 and Ubaghs et al. 1978
Sister taxa: Acrocrinitidae, Amarsupiocrinus, Amblacrinus, Bolicrinus, Carpocrinidae, Cerasmocrinus, Closterocrinus, Compsocrinina, Delgadocrinidae, Dolatocrinicae, Eknomocrinidae, Eocamptocrinus, Eucalyptocrinitidae, Exsulacrinus, Glaphyocrinus, Glyptocrinina, Habrotecrinidae, Harrelicrinus, Hexacriniticae, Hyrtanecrinus, Ilmocrinus, Ivanovaecrinus, Lobomelocrinus, Marhoumacrinus, Marsupiocrinidae, Nanicrinus, Neocamtocrinus, Pandanocrinus, Paracrocrinus, Paratalarocrinus, Patelliocrinidae, Phrygilocrinus, Praedicticrinus, Shimantocrinus, Struszocrinus, Tanaocrinina
Subtaxa: Xenocrinus
Type: Xenocrinus
Ecology: stationary upper-level epifaunal suspension feeder
Distribution:
• Silurian of Canada (3: Quebec collections)
• Ordovician of Canada (10: Quebec, Québec), the United Kingdom (1), United States (23: Illinois, Iowa, Indiana, Kentucky, Ohio, Pennsylvania)
Total: 37 collections including 38 occurrences