and other herbivores

designed to withstand the force of powerful muscles that propelled a crescent-shaped tail

Aunque no era un dinosaurio de gran tamaño

Its name "Dryosaurus" means "oak lizard"

5 meters and a weight of up to 300 kilograms

Irritator challengeri Scale:1:20 and other herbivoresIrritator challengeri is a genus of spinosaurid theropod dinosaur that lived during the Early Cretaceous Period, approximately 110 million years ago, in what is now Brazil. Its name comes from the Latin "irritator", in reference to the frustration of paleontologists upon discovering that the original fossil had been altered with plaster by the collectors who found it, and "challengeri" in honor of Professor Challenger, a fictional character created by