How did changing environments cause early horses to evolve?

Evidence: In the Cenzoic Mammals exhibit, there were fossils of early horses that looked similar but had distinct differences. Since they were time periods apart, they probably had different adaptations to their changing environments.

Explanation: If the climate in an environment changes, like it did to early horses in the Micone era, it can affect that animals survival. So, horses became very diversified. The changing environment led to the specialization of some species, like the grassland dwellers, and they were better equipped for this new environment with their traits. This evidence comes from the fossil record and shows that horses today evolved from these ancestors.