12 Apr, 2008
Shock: First Animal on Earth Was Surprisingly Complex (LiveScience.com)
Posted by: RSS In: Yahoo.com
LiveScience.com - Earth’s first animal was the ocean-drifting comb jelly, not the simple sponge, according to a new find that has shocked scientists who didn’t imagine the earliest critter could be so complex.
The mystery of the first animal denizen of the planet can only be inferred from fossils and by studying related animals today. To get to the bottom of that, scientists analyzed massive volumes of genetic data to define the earliest splits at the base of the animal tree of life. …
