Odonteus is a genus of beetles in the family Bolboceratidae, formerly known by the name Bolboceras. The name Bolboceras was replaced in 1990 when it was discovered that Odonteus had been published one month earlier; this finding was upheld by ICZN Opinion 2138 in 2006, which made the two names synonymous, with Odonteus having priority. Some researchers continue to use the invalid junior name (e.g.).