This ancient sea worm sported a crowd of ‘claws’ around its mouth
Newly discovered animal had about double the number of spikes as its modern counterparts
![illustration of an ancient arrow worm](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/08/090217_notebook_introducing_main.jpg?fit=860%2C460&ssl=1)
SPINY SWIMMER An ancient arrow worm (illustrated) had about 50 spines protruding from its face to help it capture prey.
Marianne Collins, © Royal Ontario Museum