But that is exactly what roamed around what’s currently northeast Illinois in the late Carboniferous Period about 300 million to 320 million years ago, according to a study published Friday in ...

The fossil seems to date back toward the end of the Carboniferous period and into the Permian period, which took place about 300 million years ago, Calder told the news agency. Those time periods ...

A routine fossil-hunting trip turned into a groundbreaking discovery for a pair of researchers when they stumbled upon a rare ...

The Huronian Ice Age, over 2.5 billion years ago, was Earth's first major ice age. In this video, we explore what caused it, what life was like, and how the planet eventually warmed. Join us on ...

But a recent study suggests that the timeline actually stretches further back — beyond the evolution of early humans and past the age of dinosaurs — to 200 to 300 million years ago when a hot ...

It dates back to the Carboniferous Period, which was over 300 million years ago—long before dinosaurs roamed the Earth. Most iridescent ammonite fossils known today come from the Mesozoic Era ...

A reanalysis of paleomagnetic poles provides tighter bounds on the style and rate of motions of our whole planet with respect to its rotation axis.

Although mountains began to rise above sea level some 300 million years ago, they were eroded by wind and water to form massive dunes. Eventually the dunes were compacted by erosion into mountains ...

Few animal fossils have been found in the mine—chemicals in the ancient swamp's water may have dissolved shells and bones—but other sites from more than 300 million years ago, a period known ...