One ton rodent found in Uruguay

Paleontologists in Uruguay have discovered a rodent that likely weighed a metric ton when it was alive around two million years ago. The researchers estimated the animal's size based on the skull they found that measures 53 centimeters long. From New Scientist:
Rattthead "Our work suggests that 4 million years ago in South America, 'mice' that were larger than bulls lived with terror birds, sabre-toothed cats, ground sloths, and giant armoured mammals," say the Uruguayan researchers.
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