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Subphylum Crustacea - Crustaceans

unknown - Armadillidium vulgare Pill Bug (Roly Poly) - Dorsal  - Armadillidium vulgare Woodlouse - Trachelipus rathkii Shield-backed Kelp Crab or Northern Kelp Crab - Pugettia producta Isopod Armadilloniscus lindahli Woodlouse - Trichoniscus Pill Bug - Armadillidium vulgare
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Explanation of Names
Author: BrĂ¼nnich, 1772
Internet References
University of Berkeley. Introduction to the Crustaceamorpha.