Superclass Oligostraca Zrzavý et al. 1997 (arthropod)
Parent taxon: Hymenostraca according to T. A. Hegna et al. 2020
See also Lozano-Fernandez et al. 2019 and Oakley et al. 2013
Sister taxa: Branchiocaris, Ercaicunia, Hymenocarididae, Hymenocaris, Multicrustacea, Nereocaris, Tokummia
Subtaxa: Ichthyostraca Ostracoda
Ecology: