518 Million Years Ago, the Biggest, Baddest Predators Were… Worms?

Beware the biggest predator of the Cambrian oceans: an arrow worm with a massive, arthropod-munching maw.

By Sam Walters
Jan 9, 2024 5:50 PMJan 9, 2024 5:52 PM
A reconstruction of the pelagic ecosystem and the organisms fossilised in Sirius Passet, revealing how Timorebestia was one of the largest predators in the water column more than 518 million years ago
Fossils from the Sirius Passet fossil locale suggest that the Timorebestia arrow worms were among the fierest predators of the open ocean, 518 million years ago. (Credit: Artwork by Bob Nicholls/@BobNichollsArt)

Newsletter

Sign up for our email newsletter for the latest science news
 

Sharks and seals weren’t always the top predators of the oceans. Approximately 518 million years ago, that title went to none other than worms.

According to a new study in Science Advances, a team of researchers recently found the fossils of a previously unknown worm from around 518 million years ago. Terrorizing the oceans around northern Greenland, these fossils were some of the Cambrian’s fiercest, free-swimming predators, representing a long-lost arrow worm, forgotten with the passage of time.


0 free articles left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

0 free articlesSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!

Subscribe

Already a subscriber?

Register or Log In

Stay Curious

Sign up for our weekly newsletter and unlock one more article for free.

 

View our Privacy Policy


Want more?
Keep reading for as low as $1.99!


Log In or Register

Already a subscriber?
Find my Subscription

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
Subscribe
To The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Copyright © 2024 Kalmbach Media Co.