3 min read Continents were on the move in the Cretaceous, busy remodeling the ... and ammonites—perished in the extinction event at the end of the period 65 million years ago.

Scientists have discovered levels of iridium 30 times greater than average in the Cretaceous/Tertiary (KT) boundary, the layer of sedimentary rock laid down at the time of the dinosaur extinction.

The end-Cretaceous extinction—the massive extinction event widely attributed to an asteroid impact that wiped out all non-avian dinosaurs approximately 66 million years ago—had a profound ...

That individual animal lived not so long before the Cretaceous-Tertiary extinction that wiped out many of Earth's species some 65 million years ago. Brachychampsa had short teeth and a large mouth ...

More mammals were living on the ground several million years before the mass extinction event that wiped out the dinosaurs ... “The vegetational habitat was more important for the course of Cretaceous ...

Earth’s long history has seen an uncountable number of species come and go – but one of the most famous extinction events ... Cretaceous-Paleogene (K-Pg) boundary, formerly the Cretaceous ...

New fossil analysis shows mammals transitioned to terrestrial lifestyles millions of years before the mass extinction—driven ...

More mammals were living on the ground several million years before the mass extinction event that wiped out ... life changed toward the end of the Cretaceous, with flowering plants, known as ...

Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that ... depiction of marine life ...