Full reference: T. E. Guensburg and J. Sprinkle. 2003. The oldest known crinoids (Early Ordovician, Utah) and a new crinoid plate homology system. Bulletins of American Paleontology 364:1-43
Parent taxon: Crinoidea according to T. E. Guensburg and J. Sprinkle 2003
Sister taxa: Abbreviatocrinites, Acariaeocrinus, Aethocrinea, Angulata, Asperocrinidae, Aspidocrinus, Balearocrinus, Baryschyr, Bornium, Camerata, Carpenterocrinus, Communicrinus, Crisantum, Cyclocaudex, Cyclocharacidae, Cyclocrista, Cyclocyclicus, Cyclomischidae, Cycloscapus, Dazhucrinus, Dentiferocrinidae, Dicyclica, Dronovicrinus, Dulanocrinus, Dwortsowaecrinus, Echmatocrinida, Entrochus, Entrochus rotiformis, Exaesiodiscidae, Flexicrinus, Floricyclidae, Floripila, Flucticharacidae, Flucticharax, Gasterometra, Gemmacrinus, Glyphidocrinus, Hemistreptocrinoidea, Heterostelechus, Kojvicrinus, Kstutocrinidae, Lamprosterigma, Leptocarphiidae, Lichenocrinus, Malovicrinus, Mastocrinus, Mooreanteris, Moscovicrinus, Multifidocrinus, Ordinacrinus, Pandocrinus, Pentacrinoidea, Pentagonocyclicus, Pentagonopterix, Pentaridica, Picteticrinus, Pinegicrinus, Preptopremnum, Protocrinoidea, Salairocrinidae, Salairocrinus, Schyschcatocrinidae, Stenocrinidae, Stukaliniidae, Tantalocrinidae, Taranshicrinidae, Tatjanicrinus, Tetragonocyclicus, Tetralobocrinus, Torrocrinus, Waikaripites, Webericrinus, Zeravschanocrinus
Subtaxa: Titanocrinidae
Ecology: stationary upper-level epifaunal suspension feeder
Distribution: found only at base of Hintze's Reef, Middle Mountain section, Wah Wah Mountains (Ordovician of Utah)