especialmente en la región torácica

Fossil nests and the posture of adults on eggs have provided a crucial connection between dinosaurs and modern birds

in Arizona

Its diet consisted mainly of large fish

Length 69 mm

Irritator challengeri Seymouria especialmente en la región torácicaIrritator 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