A massive ice age wiped out ocean life 445 million years ago, reshaping ecosystems and setting the stage for jawed fish ...

A mass extinction created the ecological conditions that set the stage for a dramatic shift in marine life.

During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...

Some 445 million years ago, life on Earth was forever changed. During the geological blink of an eye, glaciers formed over ...

The Rio Grande cooter faces significant threats from oil and gas operations in Texas and New Mexico, as well as climate ...

Extinction: Ending Explained by Deffinition Read the full article here - ---------------------------------------------------- ...