(Gr.,=10 feet), name for invertebrate animals of the crustacean
order Decapoda (phylum Arthropoda
) including the crabs, the lobsters and crayfish, and the true shrimps, all having five pairs of legs. The name Decapoda was also formerly applied to a very different group of animals, a cephalopod
order including the cuttlefish and squids, characterized by two long and eight short tentacles. The cuttlefish are now classified in the order Sepioidea and the squids in the order Teuthoidea of the class Cephalopoda in the phylum Mollusca
The Columbia Electronic Encyclopedia Copyright © 2004.
Licensed from Columbia University Press