Stygiomysida is a small order of malacostracan crustaceans in the superorder Peracarida. It has traditionally been considered part of the order Mysida (opossum shrimps), but was separated from it on phylogenetic grounds.Meland, K.; Mees, J.; Porter, M.; Wittmann, K. J. (2015). Taxonomic Review of the Orders Mysida and Stygiomysida (Crustacea, Peracarida). PLoS ONE 10(4): e0124656
Families: Lepidomysidae (1 genus, 9 species) Stygiomysidae (1 genus, 7 species)
References