Fossil remains of a large, now-extinct bird species have been discovered in Australia's Boodjamulla National Park. The ground-dwelling species—Menura tyawanoides—is an ancient ancestor of Australia's ...

In Canada's far north, a surprising discovery: fossilized feces of arctic ground squirrels contain DNA from woolly mammoths ...

If modern snakes already make your skin crawl, you should be thankful you never had to share the planet with their ...

Estimating the maximum speed capability (athletic capability) of very large fossil animals is challenging. While large animals have limbs favoring longer stride lengths and higher speeds, their body ...

When you think of rats, you think of relatively small rodents. These dimensions did not apply to the white-footed rabbit rat ...

In the world of biology, being declared extinct is usually a permanent sentence, but nature occasionally loves to prove us wrong. These incredible animals, often referred to as "Lazarus species," ...

The late 1900s were a time of rapid change for our planet, and unfortunately, some of its most unique inhabitants did not survive. Between the 1980s and 1990s, several animal species disappeared ...