decapod (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.
Several things share the name decapod, meaning "ten-legged":


  • Decapodians are decapod-like characters in the cartoon series Futurama
  • Decapodiformes are ten-limbed cephalopods with eight arms and two tentacles
  • An name for a 2-10-0 steam locomotive.

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