Su rasgo más llamativo era la forma de su cráneo: ancho y aplanado

con una longitud estimada de alrededor de 2 metros

kayetakatae

adecuados para arrancar hojas y brotes

durante el período Devónico Tardío

Irritator challengeri cretácico Su rasgo más llamativo eraIrritator challengeri is a genus 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", in reference 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