A 508-million-year-old sea predator with a 'jackknife' head



Artistic reconstruction of Habelia optata. Habelia is thought to have been an active predator, eating small animals with hard carapaces -- such as trilobites.

Paleontologists at the University of Toronto (U of T) and the Royal Ontario Museum (ROM) in Toronto have entirely revisited a tiny yet exceptionally fierce ancient sea creature called Habelia optata that has confounded scientists since it was first discovered more than a century ago.

https://phys.org/news/2017-12-millio...knife.html#jCp