More than 500 million years ago, during what is known as the Cambrian period, the seas and oceans on Earth were filled with a ...

New research proposes the Brain-First Hypothesis: the evolution of the brain drove animal diversification during the Cambrian ...

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

For more than a century, the Cambrian explosion has served as biology’s big bang: the moment, roughly 538.8 million years ago ...

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

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

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

Scientists revisiting mysterious 540-million-year-old microfossils from Brazil have overturned a major idea about early ...

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 ...

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

A reexamination of microfossils found in the Brazilian state of Mato Grosso do Sul shows that the marks previously interpreted as traces of worms or other small oceanic animals are actually ...