The first four-legged vertebrates did not grow up like tadpoles after all. That idea has shaped the story of life on land for ...

We’ve all seen some version of the classic evolutionary diagram. A fish crawls out of a primordial swamp, sprouts legs, ...

The fossil turned out to be a hatchling of a crocodile-like creature, and it suggests, according to a new study, that early ...

Palaeontologists have found new evidence that the early ancestors of amphibians, reptiles and mammals did not have a larval ...

Tiny Fossils Just Overturned What Scientists Thought They Knew About Life on Land ...

About an hour's drive southwest of Chicago, in the coal-mining spoil heaps of northern Illinois, lies one of the most ...

State lines are one way to picture the US, but natural history provides another – one that shows the ancient and living ...

Our ancient four-legged ancestors didn't have an amphibian-like life cycle when they began walking on land, according to a ...

The sail-backed predator Dimetrodon is one of the most iconic animals of the early Permian—long before dinosaurs dominated Earth. Most known species of this early relative of mammals reached large ...

Traces or perforations caused by living organisms after an animal's death can be found on various dinosaur bone remains.

Mongolia contains some of the most well preserved and diverse fossils in the world, but they attract more than paleontologists. Black market smugglers routinely rob both the East Asian country of its ...

A fossil of the creature provides the first evidence that microraptors lived in what is now northwestern China. Its discovery ...