About 250 million years ... largest of the many mass extinctions that have struck the planet. The most famous die-off ended the reign of the dinosaurs 65 million years ago between the Cretaceous ...

Surprisingly, the ancestors of modern crocodiles survived two mass extinctions throughout their 230-million-year history.

Learn why a comprehensive comparison of crocodile skulls, teeth, and jaws hints that generalists, not specialists are best ...

Scientists have concluded that the impact that created this crater occurred 65 million years ago. The date corresponds perfectly to the date of the dinosaur extinction. Rare Metal The metal ...

within 65 light-years of Earth. They then compared this with the rate of those famous 'Big Five' mass extinction events in the history of life on Earth, a planet thought to be 4.5 billion years old.

The Jurassic Period is one of the three prehistoric geological periods of the Mesozoic Era. It spans from 145 million to 201 ...

About 252 million years ago, 80 to 90 percent of life on Earth was wiped out. In the Turpan-Hami Basin, life persisted and bounced back faster.

It’s a long-standing debate in paleontology: Were dinosaurs thriving when an asteroid hit Earth one fateful spring day 66 million years ago ... years before the mass extinction at the end ...

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 ... Starting around 145 million years ago, this ...

Compare this to the natural background rate of one extinction per million species per year, and you can see why scientists refer to it as a crisis unparalleled in human history. The current mass ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that ... factor in the Late Devonian extinction event 372 million years ago and one at the end of the Late Ordovician ...