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

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

For decades, scientists have sought to explain the so-called "Cambrian Explosion," a pivotal period over 500 million years ...

Timeline: The Cambrian Explosion and Animal Diversity Let’s go back 541 million years. Earth was about to throw the most spectacular evolutionary party in history. For billions of years, life had been ...

Paleontologists have discovered remarkable fossils in the Grand Canyon that reveal fresh details about the emergence of complex life half a billion years ago. The newfound remains of fauna from the ...

KUNMING — Chinese scientists have discovered well-preserved multicellular animal fossils in Ediacaran strata of eastern Yunnan province, indicating that complex animal communities existed in oceans ...

Ancient feeding confirmed: Harvard scientists found quantitative evidence that Cambrian luolishaniids used suspension feeding, filtering plankton from seawater. Modern parallels: Predator–prey size ...

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 ...