Prominent among these forms is Tanystropheus longobardicus

It was discovered in 2006 in the Futaba Formation

suggesting that it spent most of its time on dry land

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

Lythronax argestes Mammuthus Prominent among these forms isLythronax 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