and Wyoming

Yinlong downsi is the only known species of the extinct Yinlong genus of chaoyangsaurid ornithischian dinosaur

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

It belongs to the family of hadrosaurids

although initial remains had already been discovered decades earlier by Philippe Taquet

Irritator challengeri Scale:1:35 and WyomingIrritator 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