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Which four living subphyla make up the phylum Arthropoda?
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arthropod
Spiny lobster, or rock lobster (Palinurus elephas).
The phylum Arthropoda is divided into four extant (living) subphyla:12
- Chelicerata: This group includes spiders, scorpions, ticks, mites, horseshoe crabs, and sea spiders.13
- Crustacea: Primarily aquatic, this subphylum includes crabs, shrimp, krill, lobsters, copepods, and barnacles.13
- Myriapoda: This group consists of centipedes, millipedes, symphylids, and pauropods.13
- Hexapoda: This subphylum is primarily composed of insects.12
In addition to these living groups, the phylum includes the extinct subphylum Trilobitomorpha, which comprised the trilobites.12