Order Ophiacanthida O'Hara et al. 2017 (brittle star)
Full reference: T. D. O'Hara, A. F. Hugall, B. Thuy, S. Stöhr, and A. V. Martynov. 2017. Restructuring higher taxonomy using broad-scale phylogenomics: The living Ophiuroidea. Molecular Phylogenetics and Evolution 107:415-430
Parent taxon: Ophintegrida according to T. D. O'Hara et al. 2018
See also O'Hara et al. 2017
Sister taxa: Amphilepidida, Ophioleucida, Ophioscolecida, Ophiosuperstes
Subtaxa: Ophiacanthina
Ecology: slow-moving low-level epifaunal detritivore-suspension feeder