Why deep oceans gave life to the first big, complex organisms
Thursday, December 13, 2018 - 09:50
in Paleontology & Archaeology
For billions of years, all life on Earth was microscopic, consisting mostly of single cells. Then suddenly, about 570 million years ago, complex organisms including animals with soft, sponge-like bodies up to a meter long sprang to life. And for 15 million years, life at this size and complexity existed only in deep water. More […]