Paleontologists unearthed fossilized bones of several ground sloths at the site.

The paleontologist carefully brushed dust from the fossilized bones of a ground sloth.

The museum's new exhibit features a towering skeleton of a Shasta ground sloth that once roamed North America during the Pleistocene.

Paleontologists discovered that Shasta ground sloths once shaped the vegetation of the ancient valley.

Scientists studying Pleistocene fossils were excited to find an unusually complete skeleton of Harlan's ground sloth at the dig site.

During the riverbed excavation, paleontologists found several fossilized bones that likely belonged to Harlan's ground sloths.