This tiny mammal survived the dinosaur apocalypse and changed life on Earth

Mammals once shared the planet with dinosaurs until a catastrophic event 66 million years ago wiped out about 75% of all life on Earth. Even so, some species managed to survive. Among them were small, rodent-like mammals belonging to the genus Cimolodon. These animals were part of the multituberculates, a long-lived group that first appeared during the Jurassic Period and persisted for more than 100 million years before eventually going extinct. By studying them, scientist...