Order Diplostraca Gerstecker 1866
Parent taxon: Calmanostraca according to G. Geyer et al. 2024
See also Martin and Davis 2001, Schwentner et al. 2018 and Stigall and Hartman 2008
Sister taxa: Castrocollida, Kazacharthra, Notostraca
Subtaxa: Conchostraca Cryptopoda Estheriellina Grauvogelocaris Isaura Laevicaudata Olesenocaris Onychocaudata