Learn how egg size may help explain why ammonites didn’t survive the end-Cretaceous extinction 66 million years ago, while ...

Some of the most beautiful creatures to grace the ancient seas, the ammonites, disappeared in the end-Cretaceous mass ...

A new study challenges long-held ideas about why ammonites vanished while nautiloids survived the end-Cretaceous extinction. Researchers found that the few ammonite species that briefly persisted had ...

For 350 million years, ammonites were the resilient masterpieces of the ancient seas. They survived the Great Dying of the ...

Costa Rica fuel prices rose sharply after ARESEP approved new gasoline and diesel rates, raising costs for local drivers, ...

Decades after nearly going extinct, the world’s only existing population of Asiatic lions is overrunning a small reserve in ...

Does an elephant really need to be that massive? Why aren’t there any giant insects? Why did animals in New Zealand evolve to ...

Scientists have discovered a new species of small mammal that lived at the same time as dinosaurs, offering fresh clues about ...

The four-foot-tall Emperor penguin of Antarctica may be the most iconic member of this unique family of birds, but 17 other ...

On October 16, 2023, the U.S. Fish and Wildlife Service finalized a rule removing 21 species from the list of species protected under the Endangered Species Act because of extinction. In a single ...