New research suggests the violent explosions of dying stars may have caused two of Earth’s biggest mass extinctions millions ...

The six-mile-wide asteroid punched a one-way ticket toward extinction for all non-avian dinosaurs. Some 66 million years ...

However, the Cretaceous–Paleogene extinction event was not the worst loss of life in our planet’s history. That distinction belongs to the Permian-Triassic extinction or the Great Dying.

Mixodectes pungens, a species of small mammal that inhabited western North America in the early Paleocene, was a mystery.

She believes that the Permian extinction was caused by acid rain ... the reign of the dinosaurs 65 million years ago between the Cretaceous and Tertiary periods. Most researchers consider that ...

This changed in the late 2000s, when researchers studying ancient feathers of fossil birds and dinosaurs such as Anchiornis ...

An international team of scientists has synchronized key climate records from the Atlantic and Pacific Oceans to unravel the sequence of events during the last million years before the extinction of ...

A joint research team from China and abroad has for the first time found that mammaliaforms from the Jurassic and Cretaceous ...

Researchers first identified the cause of the end-Cretaceous extinction by the discovery of the “iridium anomaly” — a 1-centimeter-thick (0.4-inch-thick) layer of sedimentary rock rich in ...