Stygiomysida
Stygiomysida is a small order of malacostracan crustaceans in the superorder Peracarida. It has traditionally been considered part of the order Mysida, but was separated from it on phylogenetic grounds.
Families:
image:Stygiomysis cokei (10.3897-zookeys.911.47694) [Figure 2 (cropped).jpg|thumb|left|300px|Stygiomysis cokei (Stygiomysidae)]