Merycodontinae
Merycondontinae is a subfamily of pronghorn that arose during the middle of the Miocene and became extinct by the end of that period.

The Merycondontinae were small, slightly built, fast-running ungulates. Both males and females were horned.
The genera Meryceros and Submeryceros are generally regarded as synonymous with Merycodus.
References
- Byers, John A.; American Pronghorn: Social Adaptations & the Ghosts of Predators Past; University of Chicago Press; 1998