These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

On Valentine’s Day in 2018, a team of scientists walked across a flat expanse in the badlands of northeastern Ethiopia, scanning the ground for fossils. An eagle-eyed field assistant, Omar Abdulla, ...

A timeless question has always fascinated scientists who study the past. Which comes first, the new behavior or the physical tool that perfects it? Do you change how you live and then evolve the body ...

Introduction : Why teeth? -- I. Development. Microscopes, cells, and biological rhythms -- The big picture : birth, death, and everything in between -- Things that can go wrong : stress, pathology, ...

Three tiny Purgatorius teeth found in Colorado are helping scientists trace how early primates evolved and spread across ...

Fossils over 300 million years old reveal the evolution of a tongue bite in an ancient group of deep-bodied ray-finned fishes, such as Platysomus parvulus. Experts have uncovered the earliest known ...

The animal kingdom stretches anatomy far beyond human expectations. Some creatures carry organs that rival furniture in size, ...