Remarkable fossils capture mammals’ recovery after the dino-killing asteroid

Survivors grew from the size of a rat to that of a wolf within 700,000 years of the impact

mammal skulls

Scientists have found 40 mammal skulls (a selection shown) so far at Corral Bluffs, a fossil site in Colorado that’s helping reveal how mammals thrived after an asteroid strike 66 million years ago.

HHMI Tangled Bank Studios

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