To wit, by the start of the Eocene epoch about 56 million years ago, North America was also home to omomyiforms, a group of tarsier-like primates, and adapiforms, which were more lemur like.

The lush, tropical regions of Central and South America have long dazzled scientists with their plant diversity. These ...

The first first primates in North America date back about 56 million years at the beginning of the Eocene Epoch.

The first primates came to North America about 56 million years ago at the beginning of the Eocene, and they flourished on this continent for more than 20 million years.

The fiercest apex predators in Eocene North America were the hyaenodonts-- bigger, stronger carnivores, which we've talked about before. Hyaenodonts had big, powerful jaws filled with blade-like ...

Researchers Discovered 60-Million-Year-Old Fossil of Giant Possum in Texas's Big Bend National Park Texas is now home not ...

Until the end of the last ice age, American cheetahs, enormous armadillolike creatures and giant sloths called North America home. But it's long puzzled scientists why these animals went extinct ...

During the Eocene, lasting from 56 to 33.9 million years ago, the planet warmed to an incredible degree. We’ve found evidence of palm trees in Alaska from that era.

“Undoubtedly there are more middle Eocene, semi-aquatic whales to be discovered and described in North America,” Uhen says. The fossils are relatively rare, and hard to find, but they are there.