An illustration from the paper, depicting Ninumbeehan digging a burrow in a riverbed for the dry season and then re-emerging when the monsoon returned. Higher res tif file available on request at ...

Ambystoma quetzalcoatli is the first fossil salamander to be formally identified in Mexico, revealing that axolotls have ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Paleontologists ...

Scientists have long posited that the earliest water animals to transition to land had amphibious tadpole features, going ...

A fragment of upper jaw fossil from the Early Cretaceous is among the oldest examples of a toothless amphibian in the fossil record Chihiro Kai The arid valleys of Wyoming’s Cloverly Formation are ...

The rocks in the area in which the skull was found, known as the Red Beds, are over 270 million years old, and contain fossils of several ancient species that are early relatives of modern amphibians, ...

We’ve all seen some version of the classic evolutionary diagram. A fish crawls out of a primordial swamp, sprouts legs, ...

Two hundred and thirty million years ago, in what's now Wyoming, the seasons were dramatic. Torrential rain would pelt the region for months on end, and when the mega-monsoon ended, the region became ...

Add Yahoo as a preferred source to see more of our stories on Google. Paleontologists with the Smithsonian National Museum of Natural History have discovered a previously unknown prehistoric species — ...