Researchers were able to date the fossil of the flying reptile, a close cousin of dinosaurs, back to more than 209 million ...

The transition from sprawling (reptile-like) to more upright (parasagittal) posture and locomotion was a transformative event in mammalian evolution ...

Key Takeaways on the First Mammal According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ...

Whales travel through the ocean, lunging, leaping, and playing, with grace and swiftness that belie their huge size. The ...

Prior to this instance, the “tongue-nibbling” had only been observed a handful of times in captivity. First seen in captive ...

Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of ...

The animals that plummeted 85 feet into Wyoming’s Natural Trap Cave provide a layered history of life dating back to the ...

Footage captures a pair of orcas nibbling each other's tongues in the Kvænangen fjords in northern Norway. Scientists think ...

The Kalahari Meerkat Project is the longest running project operating under the Kalahari Research Centre. The research team ...

"... Its prevalence is extremely low — it may appear and then not be observed again for several years," the study’s co-author ...

While all types of ancient remains are valuable to science, teeth— protected by enamel, the hardest substance in the body—are ...