| Taxon | Prosynthetoceras |
|---|---|
| Authority | Patton 1967 |
| Subdivision ranks | Species |
| Subdivision |
|
Prosynthetoceras is an extinct genus of Artiodactyla, of the family Protoceratidae, endemic to North America. It lived from the Early to Middle Miocene 20.6—13.6 Ma, existing for approximately .[1] In appearance, Prosynthetoceras looked much like Syndyoceras, Kyptoceras, and Synthetoceras with three horns, one on the snout, and two above the eyes.