Cyathocrinites_chouteauensis_Miller_and_Gurley_1896Cyathocrinites_asperrimus_Springer_1911Cyathocrinites_barrisi_Hall_1861aCyathocrinites_barydactylus_Wachsmuth_and_Springer_1878Cyathocrinites_deroseari_n_spCyathocrinites_farleyi_Meek_and_Worthen_1866Cyathocrinites_gilesi_Wachsmuth_and_Springer_1878Cyathocrinites_harrodi_Wachsmuth_and_Springer_1880Cyathocrinites_iowensis_Owen_and_Shumard_1850Cyathocrinites_kelloggi_White_1862Cyathocrinites_lamellosus_White_1863Cyathocrinites_multibrachiatus_Lyon_and_Casseday_1859Cyathocrinites_rigidus_White_1865Cyathocrinites_sampsoni_Miller_1891bOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Kammer_et_Gahn_2003a