Irritator challengeri Variant:Unprimed approximately 112-100 million years ago

approximately 112-100 million years ago

En general

seasonal climate in the western part of the ancient Laramidia Plate during the Late Campanian

Arctodus simus became extinct toward the end of the Pleistocene

Estas serraciones

Irritator challengeri Variant:Unprimed approximately 112-100 million years agoIrritator 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