A new study of ancient fossil trails pushes the origins of complex life deeper into Earth’s history, before the Cambrian Period began.

The Cambrian Explosion: For most of the nearly 4 billion years that life has existed on Earth, evolution produced little beyond bacteria, plankton, and multi-celled algae.But beginning about 600 ...

The Cambrian explosion was an extraordinary phenomenon in the evolution of life on the planet that led to the emergence of ...

Cambrian Explosion: Major Fossil Study Challenges Theories of Animal Evolution 540 Million Years Ago Published May 22, 2018 at 8:17 AM EDT Updated May 22, 2018 at 11:52 AM EDT ...

The Cambrian explosion, in other words, was just one burst in the middle of a protracted fireworks display. “I think it’s a valuable reframing of the story,” says Phoebe Cohen , a ...

The Cambrian explosion is often presented as a chaotic moment in early evolutionary history (Image credit: canbedone via Getty Images) A cursory flip through any high school biology textbook will ...