Decapoda (10-legged) is the Order of Crustaceans that includes crabs, lobsters, shrimp, prawns and crayfish.
Species are arranged here by Infraorder to show relationships.
Anomura (Hermit Crabs)
Brachyura (True Crabs)
Astacidea (Crayfish)
Caridea (Caridean Shrimps)
Acheta (Spiny Lobster)
