For their analysis, published in the Proceedings of the National Academy of Sciences, Dirzo and his colleagues mapped the ranges of 27,600 species of birds, amphibians, mammals, and reptiles ...

Paleontologists have uncovered in Arizona a Triassic treasure trove of fossils dating back 209 million years ago.

In the wake of a mass extinction like the one that occurred 445 million ... N.Y. The National Science Foundation and the Natural Sciences and Engineering Research Council of Canada supported the study ...

In a “mysterious mass extinction” that greatly reduced shark diversity. National Geographic. Researchers in Science shared their findings about early Miocene extinction in pelagic sharks.

In less than a million years Dinogorgon vanished in the greatest mass extinction ever, along with about nine of every 10 plant and animal species on the planet. Photograph by Jonathan Blair SCIENCE ...

During that event, sharks lost 30 percent of their population, National Geographic reports. The study was published this week in Science. ... How Long Does Mass Extinction Take? February 18, 2014.

Pimm believes the sixth mass extinction is just beginning, and not well on its way. “It's a little bit dramatic,” Pimm said. “Yes, we are driving species to extinction a thousand times ...

Earth is in the midst of the sixth mass extinction in the ... published Monday in the journal Proceedings of the National Academy of ... analyzed have lost more than 80 percent of their geographic ...

And this is, of course, an anthropogenic mass extinction. The primary cause is human communities. But what we're trying to do in extinction studies is to think about scale in different ways.