Natural Trap Cave near Lovell is one of the best Ice Age fossil sites in the world, but its lack of saber-toothed cats and giant ground sloths ...

Matheus Fernandes In a dusty rock shelter in Santa Elina, Brazil, two layers of giant ground sloth bones have been swallowed into the earth. The oldest sloth fossils in the deposit date back ...

From fearsome land mammals to deadly sea creatures, we rank the most terrifying animals that once roamed Earth.

While we’re not quite sure of the species, we know for certain that avocado pits have been found on the gut content and feces of giant ground sloths. It seems that this fruit was quite the treat for ...

While past terror bird fossils placed the meat-eating birds at 3 to 9 feet tall, new findings suggest that some were even ...

The fossilized leg bone of the terror bird went unidentified for almost 20 years. Nearly 12 million years ago, the largest ...

Researchers including a Johns Hopkins University evolutionary biologist report they have analyzed a fossil of an extinct ...

The bird would have shared the land with primates, hoofed mammals, giant ground sloths and ancient relatives of armadillos known as glyptodonts. "During this time we witnessed the development of ...

This giant bird lived among primates, hoofed mammals, giant ground sloths and armadillo relatives, glyptodonts, that were the size of cars. Today, the seriema, a long-legged bird native to South ...