The discovery of Concavenator corcovatus has greatly expanded knowledge about theropod diversity during the Early Cretaceous and provided crucial evidence about the evolution of body structures

as in older reptiles

suggesting they had excellent vision in water

and possibly for defense

Irritator challengeri Scale:1:35 The discovery of Concavenator corcovatusIrritator challengeri is a species 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," referring 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