endothiodon (/ɛndoʊθiːoʊdɔːn/ "inner tooth" from greek endothi (ἔνδοθῐ), "within", and odon (ὀδών), "tooth", most likely named for the characteristic of the teeth being placed internally to the maxilla) is an extinct genus of large dicynodont from the late permian. like other dicynodonts, "endothiodon" was an herbivore, but it lacked the two tusks that characterized most other dicynodonts. the anterior portion of the upper and lower jaw are curved upward, creating a distinct beak that is thought to have allowed them to be specialized grazers.