👉 Xenosaurus is a genus of dinosaur that lived during the Late Cretaceous period, around approximately 69-65 million years ago. It was the first dinosaur to have large limbs and a powerful jawbone. Xenosauruses were known for their distinctive features such as long necks, sharp teeth, and a curved tail. They were primarily herbivorous animals that lived in grasslands and savannas across Europe, Asia, Africa, and parts of South America.