A New Tyrannosaurus Species Reveals the Evolutionary Path of the Tyrant King
- 演化之聲
- Mar 14
- 4 min read
Tyrannosaurus is the largest terrestrial predator ever discovered. Its ferocious appearance and immense power have left a lasting impression on the public imagination. As the dominant predator of North America during the final stage of the Cretaceous, Tyrannosaurus has attracted enormous scientific attention. Compared with many other non-avian dinosaurs, its fossil record is relatively abundant and well preserved, making it one of the most thoroughly studied dinosaurs.
Despite this wealth of fossils, the evolutionary history of Tyrannosaurus has long remained puzzling. Several tyrannosaurid species lived in North America millions of years before the appearance of the famous tyrant king. However, research has consistently indicated that these earlier forms represent more distant branches of the tyrannosaur family tree. Curiously, the Asian species Tarbosaurus and Zhuchengtyrannus appear to be more closely related to Tyrannosaurus itself. Because of this pattern, many researchers proposed that the ancestors of Tyrannosaurus originated in Asia and later migrated into North America. According to this hypothesis, these immigrant tyrannosaurs displaced their North American relatives and eventually evolved into the ultimate apex predator of the Late Cretaceous, the final ruler of the dinosaur world.
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