Scientists have uncovered a new fossilized animal along the farthest northern reaches of Greenland's shoreline: a giant carnivorous worm once at the top of the ancient ocean's food chain.

Scientists discovered fossils of the previously unknown worm species during expeditions in North Greenland, uncovering what they believe to be some of the earliest carnivorous animals. The worms ...

Now, it's been solved: The architects behind the tunnels were 6-foot-long worms that lived about 20 million years ago, according to a study published this week. Fossil evidence helped the study ...