Tiny detail on animal bone changes what we know about our human ancestors - The first evidence that hominins butchered several animals at the site in Romania at least 1.95 million years ago has been r ...

Are sharp teeth necessary to survive the rat race? Two warm-blooded mammal species have triumphed in the fast-paced environment of New York City: human beings and rats.

A 6 million-year-old creature that lacked sharp canines for fighting may be the first prehuman to have branched off from the ape line, researchers said Thursday. IE 11 is not supported.

The razor-sharp teeth belonged to conodonts, jawless vertebrates that evolved some 500 million years ago in the Precambrian eon and went extinct during the Triassic period, around 200 million ...

Robert Schofield, a physicist at the University of Oregon in Eugene, and colleagues used a special microscope to examine the sharp “teeth” that line the jaws of leaf-cutting ants called Atta ...