Summary:
- This article discusses the discovery of a new species of giant worm that lived over 20 million years ago. The fossilized burrow of this worm was found in what is now South Korea.
- The giant worm, named Pennichnus formosus, was likely over 5 meters (16 feet) long and burrowed deep underground, creating elaborate tunnels. This is the largest known burrowing animal from the Paleogene period.
- The discovery of this giant worm provides insights into the ecosystem and environment of that time period, when the Korean peninsula was a lush, forested region. The size of the worm suggests it played an important role in the underground ecosystem.