claim: Hermit crabs are crustaceans in the superfamily Paguroidea.
evidence: Hermit crabs are decapod crustaceans of the superfamily Paguroidea .. decapod. Decapoda. Most of the approximately 1100 species possess an asymmetrical abdomen that is concealed in a scavenged gastropod shell carried around by the hermit crab .. gastropod shell. gastropod shell