The crustacea (subphylum Mandibulata

, class Crustacea) are a diverse group of animals. This class includes some of the more familiar arthropods , including barnacles , copepods , crabs , prawns, lobsters , and wood lice . More than 30,000 species have been identified, the majority of which are marine-dwelling.

Is crustacean a class or subphylum?

crustacean, any member of the subphylum Crustacea (phylum Arthropoda), a group of invertebrate animals consisting of some 45,000 species distributed worldwide.

What does the class crustacean mean?

: any of a large class (Crustacea) of mostly aquatic mandibulate arthropods that have a chitinous or calcareous and chitinous exoskeleton, a pair of often much modified appendages on each segment, and two pairs of antennae and that include the lobsters, shrimp, crabs, wood lice, water fleas, and barnacles.