Rare look at the last days of the dinosaurs shows they were thriving, scientists say

Rare look at the last days of the dinosaurs shows they were thriving, scientists say

Rocks and fossils at the Naashoibito Member site show an ecosystem that was filled with a diverse population of dinosaurs just before they disappeared from Earth. Paleontologists have long debated if the dinosaurs suddenly went extinct when a 6.2-mile-wide (10-kilometer-wide) asteroid crashed into...

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