Why did this ancient worm have such huge jaws?

In 1994, Canadian scientist Derek Armstrong helicoptered into a remote corner of northern Ontario to collect fossils. The specimens he gathered that day, which sat in storage at the Royal Ontario Museum for more than two decades, have just helped scientists identify a new species of ancient marine worm.

"This is an excellent example of the importance of looking in remote and unexplored areas," said David Rudkin, assistant curator at the Royal Ontario Museum, and "scrutinizing museum collections for overlooked gems." 

In these 400-million-year-old rocks, researchers from the Royal Ontario Museum, the University of Bristol, and Sweden’s Lund University found jaws from the class Polychaeta, the marine relatives of earthworms.-read more