High Quality Content by WIKIPEDIA articles! Xanthoidea is a superfamily of crabs, comprising the three families Xanthidae, Panopeidae and Pseudorhombilidae. Formerly, a number of other families were included in Xanthoidea, but many of these have since been removed to other superfamailies. These include Carpilioidea, Eriphioidea, Hexapodoidea, Pilumnoidea and Trapezioidea. Even it this reduced state, Xanthoidea remains one of the most species rich superfamilies of crabs. In biological classification, rank is the level (the relative position) in a taxonomic branched ordering of living things. The most specific level is species, the next most specific is genus, and then family, class, etc.

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