Do sloths and manatees have anything in common? One is a slow-moving arboreal mammal, and the other is a lumbering aquatic creature, so it’s hard to see the similarities at first. But let’s take a closer look and compare these two lovable, oddball animals. You’ll be surprised by a unique feature they share!

Researchers have discovered the remains of a specimen of Thalassocnus, a marine sloth found for the first time in a continental environment in Northern Argentina. This discovery significantly expands the geographic distribution of this lineage of fossil sloths.