Earth’s first sponges may have been ghostly, soft-bodied pioneers—ancient animals that evolved long before their skeletons ever appeared in stone.

In the red mudstone hills of southwest China, scientists have uncovered a remarkable dinosaur that is changing how they ...

A pair of 'Sacabambaspis' fish, around 14 inches (35 centimeters) in length, which had distinct, forward-facing eyes and an ...

Some 445 million years ago, life on Earth was forever changed. During the geological blink of an eye, glaciers formed over ...

A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

By cutting into a tiny throat bone, Princeton's Chris Griffin showed that it belonged to an adult of a smaller tyrannosauroid ...

During a geological blink of an eye, glaciers formed over the supercontinent Gondwana, drying out many of the vast, shallow ...

Jawbones and other remains, similar to specimens found in Europe, were dated to 773,000 years and help close a gap in ...

The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...

Museum fossils in England reveal 200-million-year-old coelacanths, fish that swam alongside the first dinosaurs ...

In 2009, Yohannes Haile-Selassie and his team were combing the desert landscape of Burtele, a paleontological site in the Afar Region of Ethiopia, when Stephanie Melillo found something remarkable: an ...

Around 410 million years ago, terrestrial life was relatively simple. There were no forests or prairies—land was largely dominated by slimy microbial mats. The types of plants that would eventually ...