Researchers created 3D models of ancient tracks in Oregon’s John Day Fossil Beds National Monument. The study revealed a ...

One showed prints of a three-toed ungulate, possibly a rhinoceros or ancient tapir. The other: the 29 million-year-old tracks from what the researchers believe to be some sort of saber-toothed cat.

One showed prints of a three-toed ungulate, possibly a rhinoceros or ancient tapir. The other: the 29 million-year-old tracks from what the researchers believe to be some sort of saber-toothed cat.