With a head covered in rows of curved spines, ancient Selkirkia worms could easily be confused with the razor-toothed sandworms that inhabit the deserts of Arrakis in “Dune: Part Two.”During the Cambrian Explosion more than 500 million years ago, these weird worms — which lived inside long, cone-shaped tubes — were some of the most common predators on the seafloor.
“If you were a small invertebrate coming across them, it would have been your worst nightmare,” said Karma Nanglu, a paleontologist at Harvard.
“It’s like being engulfed by a conveyor belt of fangs and teeth.”Thankfully for would-be spice harvesters, these ravenous worms disappeared hundreds of million years ago.
But a trove of recently analyzed fossils from Morocco reveals that these formidable predators measuring only an inch or two in length, persisted much longer than previously thought.
Persons:
”, Karma Nanglu, “
Organizations:
Harvard
Locations:
Arrakis, Morocco