†order Protocrinoida Guensburg and Sprinkle 2003 (Sea lily)

Crinoidea - Protocrinoida

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

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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)

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