Advances in imaging techniques reportedly debunks a purported "animal" fossil from long before the Cambrian explosion.

The Ediacaran, an era that ended about 540 million years ago, is considered the prelude to the Cambrian explosion, a period ...

For decades, scientists have wondered what triggered the sudden "explosion" of complex animal life on Earth. This new hypothesis suggests that the answer isn't found in shells or legs, but in the ...

For more than a century, the Cambrian explosion has served as biology’s big bang: the moment, roughly 538.8 million years ago, when complex animal body plans seemingly burst into the fossil record ...

From butterflies to blue whales, corals and worms, Earth is home to an incredible diversity of animals. How all of these ...

More than 500 million years ago, during what is known as the Cambrian period, the seas and oceans on Earth were filled with a myriad of marine animals, many of which have now become extinct. This ...

Trove of fossils discovered in Canada sheds light on "when life first became large, complex and unmistakenly animal." ...

Roughly 500 million years ago, a strange event in the evolution of life on Earth seems to have taken place. The known fossil ...

But more than half a billion years ago this wilderness was an ancient seafloor home to the wrinkled pancakes, fleshy fronds ...

For most people who have ever opened an introductory geology book, the Grand Canyon arrives as a single, tidy picture. Sand at the bottom, mud above it, limestone on top, all sweeping gently across an ...

Canadian deep-sea fossils push the origin of animal sex and movement back 567 million years, rewriting early evolutionary ...