Horses migrated back and forth repeatedly between North America and Eurasia, during the Late Pleistocene. But when a warming environment flooded a land bridge, it cut off travel between the continents, leading to both the decline of the horses in…
Horses migrated back and forth repeatedly between North America and Eurasia, during the Late Pleistocene. But when a warming environment flooded a land bridge, it cut off travel between the continents, leading to both the decline of the horses in…