Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Cambrian creatures in a colorful explosion A cursory flip through any high school biology textbook will ...

Looking a bit like aquatic woodlice with long, grasping arms, they were soft-bodied with a frilly fringe that ran along each ...

Researchers studying ancient rocks from the late Ediacaran period uncovered a fossil evidence that complex animal groups, including the closest known invertebrate relatives of humans, may have existed ...

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New research suggests ancient feces helped fuel marine life during the Cambrian Explosion.

Early animals formed complex ecological communities more than 550 million years ago, setting the evolutionary stage for the Cambrian explosion, according to a study by Rebecca Eden, Emily Mitchell, ...

Scientists have discovered a new clue about early ocean life in the days before dinosaurs, known as the early Cambrian period ...

Biomechanical studies on the arachnid-like front 'legs' of an extinct apex predator show that the 2-foot (60-centimeter) marine animal Anomalocaris canadensis was likely much weaker than once assumed.

LIFE appeared on our planet more than 3.5 billion years ago and consisted exclusively of microbes for the next 3 billion years. Then, about 539 million years ago, everything changed. In the geological ...

Spiders, crabs, and other arthropods evolved from a group of animals that underwent a burst of diversity around 500 million years ago. One fossil site provides an extraordinary glimpse into these ...