Lived in the western part of North America, which at that time was the island of Laramidia, and was the most common of the tyrannosaurids. Fossil remains of tyrannosaurs are found in various geological formations dating from the Maastrichtian Cretaceous period, about 70.6-66.043 million years ago. He was one of the last non-avian dinosaur dinosaurs that existed before the cataclysm that ended the Mesozoic era (Cretaceous-Paleogene extinction).
Lived in the western part of North America, which at that time was the island of Laramidia, and was the most common of the tyrannosaurids. Fossil remains of tyrannosaurs are found in various geological formations dating from the Maastrichtian Cretaceous period, about 70.6-66.043 million years ago. He was one of the last non-avian dinosaur dinosaurs that existed before the cataclysm that ended the Mesozoic era (Cretaceous-Paleogene extinction).
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