Imagine standing in a place where time folds in on itself—a vast landscape of mountains, valleys, forests, and rivers. Now ...

The private company Colossal Biosciences claims to have resurrected dire wolves through genetic editing. The resulting trio, ...

The giant ground sloths thrived during the Late Pleistocene era, around the same period when many now-extinct megafauna existed, such as mammoths and saber-toothed cats. The fossil provides ...

Unlike now, most extinct sloths lived on the ground and some were many times larger than modern tree sloths. Mylodon darwinii is the scientific name for a species of extinct giant ground sloth. On ...

New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct.

The extinct giant ground sloths were some of the only mammals that had digestive systems large enough to process the huge avocado seeds whole. They feasted on the fruit and then dispersed the ...

On Wednesday, the Santa Cruz Museum of Natural History announced that it's now in possession of a prehistoric left arm bone belonging to a Jefferson’s ground sloth (Megalonyx jeffersonii ...