Here’s how fierce T. rex got to North America

EarthSky’s Deborah Byrd spoke with paleontologist Cass Morrison on Monday, May 12, about his new study showing that ancestors of T. rex came from Asia. He said they entered North America by crossing the Bering Strait into what’s now Alaska. And Deborah and Cass talked about a lot more besides, from dinosaur feathers to the incredibly long span of time that dinosaurs lived on Earth. It was fun! Watch in the player above, or on YouTube.

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