The Cambrian Explosion is a landmark moment in the history of life on Earth when many of the major groups of animals first ...

The first animals to have complex skeletons existed about 550 million years ago, fossils of a tiny marine creature unearthed in Namibia suggest. The find is the first to suggest the earliest ...

And given how long these animals have existed, it’s possible that placozoans served as the blueprint for the nervous systems in more complex animals, including humans. The work was published in ...

Of the 8.7 million species on Earth, why are human beings the only one that paints self-portraits, walks on the Moon and ...

Fossils offer a glimpse into Earth's ancient life, revealing the origins and evolution of complex organisms. Discoveries like ...

The delayed appearance of animals in the ocean was therefore not caused by a lack of oxygen, according to Butterfield, but rather because blind Darwinian evolution needed time to arrive at that ...

The evolution of some of the earliest complex animals on our planet may have been spurred on by other, simpler early animals. These simple marine animals first evolved around 560 million years ago ...

A set of tiny burrows could resolve a big puzzle: how complex animals evolved and spread around the world without revealing their presence. The Cambrian explosion, roughly 541 million years ago ...

Some of the first complex animals lived in a shallow sea near the mouth of a river delta about 518 million years ago. The changeable environment, which was prone to violent floods, ...

FRESNO, Calif. (KFSN) -- The Fresno Chaffee Zoo now has a new home for some of its most popular animals -- with the unveiling of its ambassador animal complex Wednesday. "These animals were housed ...