Scientists have discovered a species of ancient mammal that survived the event that led to the extinction of the dinosaurs.
The remains of this large, rodent-like creature give clues about how mammals "took over" when dinosaurs died out.
Kimbetopsalis simmonsae, as the newly discovered species has been named, was a plant-eating creature that resembled a beaver.
The news is published in the Zoological Journal of the Linnean Society.
Dr Stephen Brusatte from the University of Edinburgh, lead researcher on the study, explained how a student on his team called Carissa Raymond found the fossil while prospecting at a site in New Mexico, US.
"We realised pretty quickly that this was a to
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