http://www.newsweek.com/scientists-discover-giant-carnivorous-worm-ancient-beast-1857900

Giant worm fossils found in North Greenland have revealed a past dynasty of ancient predators that is totally new to science.

The newly discovered animals, which scientists have named Timorebestia—translating to "terror beast" in Latin—may be among the earliest carnivorous animals to have colonized the water column over 500 million years ago.