Label the four extant classes of arthropods and match the appropriate characteristics to each group Mouthparts are pincers or fangs Mandibular mouthparts and a body consisting of a head followed by numerous similar segments Myriapoda Hexapoda Mandibular mouthparts and a body consisting of three unique regions Crustacea Chelicerata Mandibular mouthparts with biramous appendages TABLE 34.1 Class Major Groups of the Phylum Arthropoda Characteristics