A hamster-sized mammal from the Cimolodon genus survived the catastrophic extinction event 66 million years ago that killed 75% of Earth's life.
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Before dinosaurs vanished, a hamster-sized mammal was already shaping what survived next on the Pacific Coast
75% % Life killed in extinction event
66 Million years Time since extinction event
100 Million years Multituberculate survival span
75% Of Life Killed extinction event
100+ Million Years survival duration