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  1. Oxford Dictionary

    edaphosaurus

    • IPA[ɪˈdafəsɔːrəs]

    英式

    • n.
      a large herbivorous synapsid reptile of the late Carboniferous and early Permian periods, with long knobbly spines on its back supporting a sail-like crest.

    • noun: edaphosaurus, plural noun: edaphosauruses