†class Soluta Jaekel 1900
Parent taxon: Blastozoa according to F. Noailles et al. 2014
See also Dupichaud et al. 2023, Lefebvre and Lerosey-Aubril 2018 and Regnéll 1945
Sister taxa: Asteroblastida, Blastoidea, Crinoidea, Diploporita, Eocrinoidea, Glyptosphaeritida, Lepidocystoidea, Parablastoidea, Paracrinoidea, Rhombifera, Rhombifera, Sphaeronitida
Subtaxa: Coleicarpus Dendrocystitida Syringocrinida
Ecology: stationary epifaunal suspension feeder