clashing scales and teeth in a battle of colossal proportions

Snout-tail length 375mm

Secodontosaurus willistoni is just one of many therapsid species that inhabited Earth in the past and played a crucial role in the evolution of modern mammals

The feathers provided thermal insulation

Sinosauropteryx prima Variant:Primed clashing scales and teeth inSinosauropteryx prima is the only known species of the extinct genus Sinosauropteryx of feathered compsognathid theropod dinosaur, which lived in the mid Cretaceous period, approximately 125 million years ago, in the Aptian, in what is now Asia. It was discovered in northeastern China's Liaoning province, which is famous for its abundant and well preserved dinosaur fossils. Sinosauropteryx was a small dinosaur, with an estimated length of around 1. 1