Gammaridea is one of the suborders of the order Amphipoda, comprising small, shrimp-like crustaceans. Until recently, in a traditional classification, it encompassed about 7,275 (92%) of the 7,900 species of amphipods described by then, in approximately 1,000 genera, divided among around 125 families. That concept of Gammaridea included almost all freshwater amphipods, while most of the members still were marine.
Corophiidae is a family of amphipods, containing the following genera:
Dexaminidae is a family of amphipods. It contains the following genera:
Calliopiidae is a family of amphipods, containing the following genera:
Podoceridae is a family of amphipods. It contains eight genera:
Pardaliscidae is a family of amphipods, whose members typically inhabit the deepest parts of ocean basins. It contains the following genera:
Lysianassidae is a family of marine amphipods, containing the following genera:
Leucothoe is a genus of amphipods in the family Leucothoidae. It contains the following species:
Pontogeneiidae is a family of amphipod crustaceans, containing the following genera:
Alicellidae is a family of amphipod crustaceans, which live as scavengers in the deep sea, often in association with hydrothermal vents. The family includes the following genera:
Stegocephalidae is a little-studied family of amphipods belonging to the suborder Gammaridea.
Photidae is a family of amphipod crustaceans, containing the following genera:
Epimeria is a genus of amphipods in the family Epimeriidae. There are more than 80 described species in Epimeria.
Ampithoidae is a family of amphipod crustaceans. The family has a worldwide distribution as algal dwellers. They commonly create tube-shaped nests on their host plants or algae which serve as both shelter and food. Young ampithoids develop from eggs to a larval stage within their mother's brood-pouch, formed by the appendages of her abdomen.
Amaryllis is a genus of amphipods belonging to the family Amaryllididae. The genus was first described in 1879 by William Aitcheson Haswell, and the type species is Amaryllis macrophthalma Haswell, 1879.
Eusirus is a genus of amphipods belonging to the family Eusiridae. The genus has cosmopolitan distribution. Within the genus Eusirus sexual dimorphism is weak, therefore identifying the sex of non-adult individuals is difficult.
Aristiidae is a family of crustaceans belonging to the order Amphipoda.
Scopelocheiridae is a family of crustaceans belonging to the order Amphipoda. The family was first described in 1997 by Helen E. Stoddart and James K. Lowry. The type genus is ScopelocheirusBate, 1857.
Maeridae is a family of marine amphipods, which was first described by Taudl Krapp-Schickel in 2008.
