Parent taxon: Isocrinida according to S. K. Donovan 1994
See also Donovan et al. 1993
Sister taxa: Buchicrinus, Cainocrinus, Comatulidina, Denticrinus, Doreckicrinus, Echicrinus, Hispidocrinus, Laevigatocrinus, Margocrinus, Moenocrinus, Nielsenicrinus, Pentacrinitidae, Percevalicrinus, Praeisselicrinus, Raymondicrinus, Rhodanometra, Sievertsia, Siliesiacrinus, Singularocrinus, Terocrinus, Tollmannicrinus, Tulipacrinidae
Subtaxa: Cainocrinidae Isocrinidae Isselicrinidae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Quaternary of Jamaica (1 collection)
• Miocene of Cuba (1), Jamaica (1), Japan (1), Spain (1)
• Oligocene of Germany (1), United States (6: Oregon, Washington)
• Eocene of Egypt (1), France (5), Jamaica (1), New Zealand (3), Spain (1), the United Kingdom (2), United States (4: Oregon, Washington)
• Paleocene of Antarctica (1), Denmark (1), New Zealand (1)
• Cretaceous to Paleogene of the Netherlands (1)
• Cretaceous of Austria (1), Cuba (1), the Czech Republic (7), France (10), Germany (3), Japan (13), Mexico (1), Oman (1), Poland (2), Switzerland (1), the United Kingdom (28), United States (4: California)
• Jurassic of Austria (1), China (1), France (23), Germany (26), Greenland (5), Luxembourg (2), New Zealand (2), Peru (1), Poland (7), Portugal (1), Romania (1), Saudi Arabia (3), Switzerland (13), Ukraine (1), the United Arab Emirates (1), the United Kingdom (23), United States (4: Utah, Wyoming)
• Triassic of Canada (5: British Columbia), China (29), Colombia (1), East Timor (1), France (1), Hungary (2), Iran (3), Italy (14), Peru (6), Slovenia (3), United States (16: Alaska, California, Nevada, Utah)
• Permian of Australia (1)
Total: 302 collections including 391 occurrences