Leo Youngdahl was hoping to find one of his favorite fossils when he turned over a rock at a Nebraska park. Instead, he ...

A diorama of some of the earliest animals on Earth. Image via Wiki Commons. An ancient fossil bed in Mongolia preserves tiny ...

Insects belong to a broader group of six-legged animals called hexapods. This group also includes other less well-known, ...

The sudden appearance of complex animals has led scientists to argue that animals must have a “hidden history”, a period in ...

Animals seem to appear in the fossil record fairly suddenly, a little over half a billion years ago. Yet rocks can preserve microscopic life in remarkable detail and still contain no animals, even ...

The animal kingdom may have started its journey on a much earlier Earth than scientists once thought. Long before ...

An ancient crocodile fossil found in the same limestone used to build the Great Sphinx has gotten a new identity.

Tiny microbes may help explain a large mystery in the fossil record: why soft-bodied animals were once preserved surprisingly ...

The Cambrian explosion was a major diversification of animal life that unfolded early in the Cambrian period, which began ...

The research, published in the journal Science Advances, suggests animals may have originated deep in the Neoproterozoic Era.

The roughly two- to four-pound predator lived alongside dinosaurs some 165 million years ago. A fossil found in northern ...

Ediacaran sea floor, Namibia, Southwest Africa – 543 million years ago. Credit: Museum of Natural History, University of ...