The Mesozoic Era extinctions formed the world as we know it today. Read about what caused them and which animals survived.

Was it a single extinction event or a series of catastrophic ... From oldest to youngest, they are the Hadeon, Archean, Proterozoic, and Phanerozoic eons. Each eon is subdivided into eras.

To find answers, a team of researchers studied North America’s fossil record, focusing on the 18 million years before the mass extinction at the end of the Cretaceous period. The new analysis ...

Now, thanks to genetic engineering, they're back in what the scientists have described as the "world's first de-extinction." "Our team took DNA from a 13,000 year old tooth and a 72,000 year old ...

On Monday, the company, which describes itself as the “world’s only de-extinction company,” announced the rebirth of the once-extinct dire wolf. The Texas-based bioengineering company used ...

(Credit: Colossal Biosciences) Last week, Colossal Biosciences made global headlines when they announced that they had successfully brought the dire wolf back from extinction, or at least a version of ...