gammaridean
/ˌɡaməˈrɪdɪən/Zoology
adjective
Of or relating to amphipods of the large suborder Gammaridea, comprising the gammarids and allied shrimp-like aquatic forms; designating such amphipods.
noun
An amphipod of the suborder Gammaridea.
Origin
Early 20th century. From gammarid + -ean, after scientific Latin Gammaridea, suborder (originally subtribe) name.