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CNN —Sometime during the Cretaceous Period, 125 million years ago, a feisty mammal the size of a domestic cat encountered a dinosaur three times its size and thought it looked like a tasty meal. “The inherited wisdom has been that the ecological interactions were unilateral: The bigger dinosaurs ate the smaller mammals. What makes this fossil exceptional is that the mammal is caught in the moment of attacking the almost fully grown dinosaur. A detail of the fossil shows the left forepaw of Repenomamus robustus wrapped around the lower jaw of the dinosaur. Gang HanPredator vs. scavengerThe fossil shows R. robustus gripping onto the lower jaw of Psittacosaurus with its left forepaw.
Persons: CNN —, paleobiologist Jordan Mallon, Michael W, Skrepnick, , Mallon, , , ” Mallon Organizations: CNN, Canadian Museum of Nature Locations: China, China’s Liaoning province
A new fossil shows a badger-like mammal biting into a dinosaur. A new paper in Scientific Reports describes a fossil of the cat-sized mammal, Repenomamus robustus, locked in "mortal combat" with a Psittacosaurus that was three times as large. The newer fossil has quite a bit of evidence suggesting that the mammal was attacking the dinosaur. "I think the clincher is just the fact that the hind leg of the mammal is trapped within the folded hind leg of the dinosaur," Mallon said. "The question that comes up is, what is a mammal doing attacking a dinosaur that's so much larger than itself?"
Persons: Jordan Mallon, Michael Skrepnick, Mallon, Han Organizations: Service, Canadian Museum of Nature Locations: Wall, Silicon, China's Liaoning Province
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