The extinct mammals were about five times larger than a grizzly bear–and filled caves with their poop.

An asteroid strike 66 million years ago caused millions of species to go extinct—including many mollusks. By studying the ...

Modern-day eagles are large birds, but they’re nowhere near the size of some extinct raptors. Here’s the eagle scientists ...

"De-extinction" takes center stage as environmentalists express dismay over erosion of the Endangered Species Act ...

Learn about the 10 terrifying creatures you’re glad went extinct. Woman found alive after missing for 62 years Dua Lipa and Callum Turner Channel the Roaring ’20s for Their Met Gala Debut Army ...

Other theologians have suggested that the Leviathan was a large reptile in the sea, perhaps one of the species of dinosaurs that roamed the earth before they went extinct. Many have suggested it’s an ...

The teeth alone weren't enough to identify a specific animal, and the matter went unresolved ... plants and animals to survive even after their related species have gone extinct on the mainland.

A native to Turkey, Iran, the Caspian Sea, Afghanistan ... extinct in 2003. They went extinct due to excessive hunting in the nineteenth and early twentieth centuries. Native to the United States, the ...

There are so many animals that have gone extinct through the ages that we’re choosing to focus just on creatures that went extinct relatively recently: from 1800 onward. So even though we’ll ...

Even so, these creatures—ranging from the size of elephants to massive sea creatures larger than the Titanic ... About 2.6 million years ago, the Megalodon went extinct in the Pliocene period, but ...

Below, we explore 15 extinct animals that scientists are considering for revival ... 4.0 , via Wikimedia Commons Once populating America’s heathlands, the heath hen went extinct in the early 20th ...