The ancestor of all placental mammals survived the dino-killing asteroid

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The ancestor of all placental mammals survived the dino-killing asteroid
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The ancient relative of humans, dogs, and bats briefly coexisted with the likes of Titanosaurs and Triceratops.

first appear, and estimates extinction ages based on when the group goes extinct, according to the authors.They showed that the groups that include primates, rabbits and hares , and dogs and cats evolved just before the K-Pg mass extinction. This means their ancestors were mingling with dinosaurs.

It was really only after the asteroid impact that the modern lines of today’s placental mammals started to take shape. As with other mammals, they likely began to diversify once the dinosaurs were out of the picture., which includes the ancestors of today’s hooved animals, lived roughly within the first 328,000 years after the dinosaurs disappeared. Mammals also began to grow significantly since they had less competition for resources.

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