fossils

Newly discovered stegosaurus fossil oldest in the world

A few vertebrae and the upper arm bone of a previously unknown species of stegosaurus have been found in the Middle Atlas Mountains of Morocco. And despite the lack of a complete skeleton, scientists say that at 168 million years old it's the oldest known stegosaurus yet found.

Why do coyotes still exist, but not saber-toothed cats?

Thousands of years ago, animals and the predators who tried to attack them became trapped in the La Brea Tar Pits, providing a treasure trove of fossils for research. Now, a detailed study of the predators found trapped in the tar is shedding light on why some are still found on Earth today but others went extinct.

Unknown species found in new treasure trove of fossils found in China

A newly discovered fossil site in China that dates back 518 million years contains more than 50% previously unknown species, according to a new study. The well-preserved Qingjiang site is helping scientists to fill gaps in the fossil record and provide a clearer picture of some of the earliest animal ecosystems.

Dinosaur fossil found in Australia was wallaby sized

Kangaroos and wallabies weren't around in Australia 125 million years ago, but small herbivorous dinosaurs that also bounded around on powerful back legs were. Researchers discovered five fossilized jaws from a previously unknown dinosaur in the state of Victoria that was about the size of a modern-day wallaby.