Biggest map of dinosaur tree yet suggests they emerged 20 million years earlier than thought

(Phys.org)—A team of researchers from the U.K. and the U.S. has mapped the biggest dinosaur tree yet, and in so doing, has found that the creatures may have evolved 20 million years earlier than most in the field have thought. In their paper published in the journal Biology Letters, the team describes how they created the new tree using probabilistic methods and why the new findings suggest that the dinosaurs might have survived a prior mass extinction.

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