This flexibility was crucial for a predator that needed to pursue prey in a three-dimensional environment like the ocean

It lived during the Miocene

y sus fósiles se han hallado en estados como Nebraska

from humid forests to semi-arid plains

Its most striking feature was its extremely long

Irritator challengeri Variant:Unprimed This flexibility was crucial forIrritator 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