Fossilized skeletons and shells clearly show how evolution and extinction unfolded over the past half a billion years, but a new analysis extends the chart of life to nearly 2 billion years ago. The ...
Fossilized skeletons and shells clearly show how evolution and extinction unfolded over the past half a billion years, but ...
If all the world's a stage and all the species merely players, then their exits and entrances can be found in the rock record ...