suggesting that it spent most of its time on dry land

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

It was discovered in 2006 in the Futaba Formation

El nombre "Yutyrannus" significa "tirano de plumas" y hace referencia a su relación con los tiranosaurios

It was formally described by Buckley et al

Lythronax argestes Mammuthus suggesting that it spent mostLythronax 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