†order Trachelocrinida Sumrall 1997

Eocrinoidea - Trachelocrinida

Parent taxon: Eocrinoidea according to J. J., Jr. Sepkoski 2002

Sister taxa: Acanthocystites, Ascocystitida, Ascocystitidae, Balangicystis, Balantiocystis, Bolboporites, Cardiocystites, Cigara, Cryptocrinitidae, Cymbionites, Gogiida, Haimacystis, Hexedriocystis, Imbricata, Lapillocystites, Lichenoididae, Lingulocystidae, Llanocystis, Luhocrinus, Marjumicystis, Palaeocystitidae, Paracryptocrinites, Peridionites, Pilocystites, Polyptychella, Rhipidocystidae, Ridersiidae, Ubaghsicystis

Subtaxa: Heckerocrinidae Trachelocrinidae

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Ecology: stationary epifaunal suspension feeder

Distribution:

• Uhaku of Sweden (1 collection)

• Ordovician of Norway (1)

• Cambrian of United States (4: Montana, Wyoming)

Total: 6 collections including 7 occurrences

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