Did a Ferocious, Badger-Like Animal Attack and Kill Dinosaurs?

Talk about punching above your weight class. A remarkable badger-like fossil has preserved the exact moment that an early mammal downed a much larger reptile.

By Max Tabiaat
Dec 18, 2023 1:00 PMDec 18, 2023 2:00 PM
Prehistoric mammal Repenomamus skull fossil biting into dinosaur ribs
The small mammal, seen with the smaller skull on the left, bits into the dinosaur's ribs. (Credit: Gang Han)

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About 120 million years ago, in the early Cretaceous period, the Earth's jungles first began to burst with the colors of blooming flowers. As the remnants of the supercontinent Pangaea drifted towards their present locations, a diverse array of dinosaurs roamed these changing landscapes. Towering behemoths like Spinosaurus and the smaller, yet ferocious Utahraptor were among the era's dominant predators.  

Contrasting these colossal beings, prehistoric mammals, mostly small and inconspicuous, lurked in the shadows, overlooked, and underestimated. 

At least, that’s been paleontology’s long-held view of the ancient food web, until recently. A study by Canadian and Chinese scientists, focusing on a fossil discovered in China's Liaoning Province, has dramatically rewritten our understanding of what ancient mammals were capable of.  

Rare Discovery of Repenomamus Fossil Engaged in Battle

An artist's rendering of the fatal encounter. (Credit: Michael Skrepnick)
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