A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...
A visualization of Tiktaalik roseae, an extinct aquatic animal with fossils that shed light on the evolution of land animals from marine animals millions of years ago. Nobu Tamura via Wikimedia ...
The earliest forms of animal life on our planet continue to fascinate scientists, who are seeking to unravel the mystery of ...