Dino deaths cleared the way for frogs

Frogs make up almost 90 percent of amphibians, and with 6,775 described species, frogs are considered one of the most diverse groups of vertebrates on the planet. In a new study in Proceedings of the National Academy of Sciences, researchers indicate that frogs’ rapid diversification stems back to the Cretaceous-Paleogene (K-Pg, formerly the K-T) boundary, about 66 million years ago, when nonavian dinosaurs and many other animals went extinct.

Full content for EARTH is available to subscribers. If you would like to gain access to the full version of this article, as well as all EARTH content, please subscribe today.

If you are connecting using a Library (IP-based) Subscription, please access full issues of the magazine through our Library Access portal.

Sarah Derouin

Sarah Derouin is an EARTH editorial intern.

Derouin is freelance writer. Before becoming a science writer, Derouin earned a Ph.D. in glacial geology from the University of Cincinnati and worked for the Bureau of Reclamation in seismic hazards and geomorphology. She is a graduate of the science communication program at the University of California-Santa Cruz. You can see more of her work at www.sarahderouin.com.

Thursday, November 30, 2017 - 06:00