UC College of Arts and Sciences Professor Thomas Algeo has been studying the planet's five major mass extinctions since the ...

The Cretaceous–Paleogene (K–Pg) mass extinction event, marking the boundary between the Cretaceous and Paleogene periods approximately 66 million years ago, stands as one of the most profound ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. About 445 million years ago, our planet completely changed ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. There’s an important concept in evolutionary biology called ...

For decades, the asteroid that ended the reign of the dinosaurs has stood as a symbol of total planetary devastation. But hidden within the chaos it unleashed was the seed of a biological rebirth. In ...

Life changes over time. Of course, it does. We know this thanks to a wealth of converging evidence in the form of millions of fossils, clear genetic clues, and observations made out in the field and ...

A pair of Sacabambaspis fish, around 35 cm in length, which had distinct, forward-facing eyes and an armored head. No fossils of animals like Sacabambaspis from after the Late Ordovician Mass ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...