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Groovy teeth suggest dinosaur was venomous

Fossils show depression in upper jaw that held venom-producing glands

By Sid Perkins

- More than 2 years ago

Well-preserved fossils of a feathered dinosaur that lived about 124 million years ago — along with certain aspects of its teeth and skull — suggest that the turkey-sized creature was venomous.

A SHOCKING BITE Sinornithosaurus may have subdued its prey with venom that flowed into a victim through unique grooves in many of the dinosaur’s teeth, a new study suggests.