When the asteroid slammed into prehistoric Mexico and drew the curtain on the Cretaceous, dinosaurs did not fare very well. All but the toothless birds soon died. The aftermath of the impact wasn ...

What made these prehistoric ‘thunder beasts’ so big? Brontotheres were among the first mammals to evolve large bodies after dinosaurs went extinct. Now we finally know the secret to their ...

Prehistoric Creatures. More than 90 percent of species that have lived over the course of Earth’s 4.5-billion-year history are extinct. Our planet has preserved evidence of this incredibly ...

Prehistoric parenting goes back even further than we thought Fossils found in Nova Scotia belong to mammal ancestors that died 309 million years ago with the adult protectively cradling a juvenile ...

As a result, the 105-million-year-old crocodile, researchers say, was something of a stand-in for mammals in the mammal-poor, long-gone southern supercontinent of Gondwana, which included the ...

By using a combination of X-ray images, biomechanical studies of the jaw, and microscopic wear patterns on the prehistoric teeth, though, Gill and colleagues found that these mammals likely ...

(What dinosaur has 500 teeth? This prehistoric jaw was one-of-a-kind.) As far as Wick and colleagues were able to discern, the lizard was a varanoid.That’s the group that contains monitor ...

This "beautiful but neglected lizard" is at the heart of a prehistoric ... videos, photos, facts, and news from National Geographic ... active animals more like today's birds or mammals than ...

Mammals are among the most adaptable animals on the planet. They are found on every continent and in every ocean, and range in size from tiny bumblebee bats to enormous blue whales. One reason for ...

According to National Geographic, Borths found the animal relics in the drawers of the fossil collection at the Nairobi National Museum in Kenya.He was working on his dissertation on hyaenodonts ...