Arthropod

Arthropoda
Centipede
Scientific classification
Kingdom:	Animalia
(unranked):	Tactopoda
Phylum:	Arthropoda
Classes
Subphylum Trilobitomorpha Trilobita - trilobites (extinct) Subphylum Chelicerata Arachnida Merostomata Pycnogonida Subphylum Myriapoda Chilopoda Diplopoda Symphyla Pauropoda Subphylum Hexapoda Insecta Entognatha Subphylum Crustacea Branchiopoda - tadpole shrimps Remipedia Cephalocarida Maxillopoda - barnacles Ostracoda Malacostraca

Arthropods (Greek language for "joint-legged") are a large group of invertebrate animals. Insects, spiders, crabs, shrimp, millipedes, and centipedes are all arthropods. In the scientific classification, all arthropods are members of the phylum Arthropoda. Arthropods have segmented body, an exoskeleton and legs with joints. Most arthropods live on land, but some live in water. Arthropods have by far the greatest number of species of any animal group. Arthropods are a source of food for many animals, including humans.