Crustacean

Crustacea Temporal range: 511–0 Ma PreЄ Є O S D C P T J K Pg N Cambrian to Recent
Abludomelita obtusata, an amphipod
Scientific classification
Kinrick:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea Brünnich, 1772
Classes & Subclasses
Thylacocephala? † Branchiopoda Phyllopoda Sarsostraca Remipedia Cephalocarida Maxillopoda Thecostraca Tantulocarida Branchiura Pentastomida Mystacocarida Copepoda Ostracoda Myodocopa Podocopa Malacostraca Phyllocarida Hoplocarida Eumalacostraca

Crustaceans (Crustacea) form a very muckle group o arthropods, uisually treatit as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill an barnacles.