The Triassic period stands out in Earth’s history as the time when dinosaurs first evolved. It was followed by the Jurassic and Cretaceous periods – at the end of the latter, the dinosaurs were wiped ...

A group of scientists has chosen a small lake near the U.S.-Canada border as the site that best represents the Anthropocene Epoch—a proposed period of geologic time marked by humans’ drastic impact on ...

No work on any science has yet been published in our language more exhaustive of facts, more clear in statement, or more philosophical in general character and arrangement, than Dana’s “ Mineralogy,” ...

The outcroppings of rock along Duck Creek contain rocks from two different geologic periods. The limestones and dolomitic limestones are from the Devonian Period and represent geologic time from ...

Earth’s history is divided up into different geological wedges of time, wedges we like to call things like epochs, periods, and eons. They’re defined by events that shaped the planet (think big ...