In the Cretaceous period, Earth was plagued by widespread volcanic activity, oceanic oxygen depletion events, and mass extinctions. Fossils from that era remain and continue to give scientists clues ...

A new study finds that one of the hottest periods in Earth's history may have driven lampreys apart -- genetically speaking. The work could have implications for how aquatic species respond to our ...

Germany's waters once saw a recently discovered new reptile species known as the Enalioetes schroederi, best characterized as a crocodile which has dolphin-like qualities which lived around 135 ...