Researchers have identified how thyroxine, a human thyroid hormone, can positively influence the life-critical calcification ...

Few predators swallow their prey whole. Even fewer can digest their meals with bones and all. But for some reptiles like the ...

What is the Tully monster? Learn more about the near-nameless fossil, and why experts still can't agree on its classification ...

A Smithsonian-led team of researchers have discovered North America's oldest known pterosaur, the winged reptiles that lived ...

Greenland sharks live for centuries with slow heartbeats and metabolism. Scientists study their longevity secrets.

Mitochondria are the body's "energy factories," and their proper function is essential for life. Inside mitochondria, a set ...

Mitochondria are the body's "energy factories," and their proper function is essential for life. Inside mitochondria, a set ...

Water and air pose completely different challenges to animals on a number of levels.

News Published: 21 June 1906 The Fossil Vertebrates of the Fayum 1 R. L. Nature 74, 175–178 (1906) Cite this article ...