This reptile had an unusual appearance compared to the better-known dinosaurs

Its arms were relatively long and ended in grasping hands with a modified thorn-like thumb

Su característica más distintiva era su mandíbula poderosa y su gran cabeza

with strong legs and an elongated neck and tail

Lythronax argestes Mammuthus This reptile had an unusualLythronax argestes was a carnivorous theropod dinosaur of the Tyrannosauridae group that lived during the Late Cretaceous , in the early middle Campanian (approximately 8079 million years ago) . Its remains come from the Wahweap Formation , in what is now southern Utah (United States) , within the ancient island continent of Laramidia , and its discovery has been key to understanding the origin and early diversification of tyrannosaurids in North