Add Yahoo as a preferred source to see more of our stories on Google. An illustration of the Devonian period fish, Dunkleosteus, preying on eurypterids (sea scorpions), which in turn were feeding on ...

Diverse and full of sea life, the Earth's Devonian era—taking place more than 370 million years ago—saw the emergence of the first seed-bearing plants, which spread as large forests across the ...

More than 350 million years ago something odd was going on with the Earth's magnetic field. Scientists now propose that the field was really weak, which may have affected life on our planet. The ...

The Devonian (419.2-358.9 Ma) is the first geological period of the late Paleozoic, spanning about 60.3 Ma from the end of the Silurian, and its beginning is marked by the First Appearance Datum (FAD) ...

More than eight decades ago, pioneering Museum of Northern Arizona geologist Major L.F. Brady made a surprising find in ...

During the Devonian period, trees began to populate the Earth. But they also created soil, and the runoff changed the chemistry of the oceans. The evolution of some of the very species that now ...

Discover Magazine turned to a University of Cincinnati geologist to learn more about what caused a mass extinction about 360 million years ago. The Devonian extinction wiped out as many as 80% of ...

Most scientists think the dinosaurs — along with countless other creatures — were wiped out some 66 million years ago when a space rock slammed into Earth. But a cosmic impact isn’t the only disaster ...

The planet's trees have seen plenty of history pass by their trunks. In fact, they began to populate Earth 385 million years ...