Irritator challengeri Variant:Unprimed Estas serraciones

Estas serraciones

Arctodus simus became extinct toward the end of the Pleistocene

In the hunting scene

honors the owner of the land where the discovery was made

Irritator challengeri Variant:Unprimed Estas serracionesIrritator 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