Tags: Crustacean.
The Halocyprida is one of the two orders within the Myodocopa in turn a subclass of the ostracods. Like their relatives in the order Myodocopida they have a long exopod on the second antenna. However unlike myodocopids their fifth appendage is leg-like rather than modified for feeding their seventh limb is reduced or absent and they have no lateral eyes. The group is primarily planktonic. There are two suborders: Halocypridina and Cladocopina.