Fossil footprints show some crocodile ancestors walked on two legs
Puzzling nearby tracks were likely also made by a bipedal croc ancestor, not a giant pterosaur
About 106 million years ago, a large crocodile ancestor (shown here in an artist’s conception) walked on two legs in what is now South Korea, leaving behind a series of footprint impressions now preserved in the rock.
Anthony Romilio/The University of Queensland