One of the classic examples of faunal turnover in the fossil record is the Miocene transition from faunas dominated by anchitheriine horses with low-crowned molar teeth to faunas with hipparionine horses characterized by high-crowned teeth. The spread of hipparionine horses is associated with increased seasonality and the expansion of open habitats.
Eronen, J., Evans, A., Fortelius, M., & Jernvall, J. (2010). The impact of regional climate on the evolution of mammals: A case study using fossil horses. Evolution, 64(2), 398 - 408. https://doi.org/10.1111/j.1558-5646.2009.00830.x