But there are major differences between types of arthropods. Insects are the most diverse class of animals, but a few physical characteristics define all insects. Insects have a segmented body with 3 ...

With about 2,000 species, earwigs are members of the arthropod phylum ... They have segmented bodies with two pairs of jointed legs found on most body segments. Millipedes range from one-half ...

“The paired nerve cords observed in arthropods, loriciferans, and kinorhynchs likely evolved independently, representing derived traits.” Another important trait shared by some ecdysozoans is a ...