Scutosaurus

Defender
Scutosaurus was a massively built reptile, up to 3 metres (9.8 ft) in length, with bony armor, and a number of spikes decorating its skull. To defend itself Scutosaurus had a thick skeleton covered with powerful muscles, especially in the neck region. Underneath the skin were rows of hard, bony plates (scutes) that acted like a form of brigandine armor.