Irritator challengeri Scale:1:35 6 meters high at the

6 meters high at the hip

It was an extinct carnivorous species of felid that inhabited South America and belonging to the Machairodontinae subfamily that lived during the Upper Pleistocene

From a paleoecological perspective

Approximate measurements of Psittacosaurus: 1:20 scale - Complete

Irritator challengeri Scale:1:35 6 meters high at theIrritator 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