CAT scans reveal fossil's spiral teeth

Using CAT scans, Idaho State University researchers have made 3D virtual reconstructions of the jaws of the ancient spiral-toothed fish Helicoprion.

Single mutation brought many East Asian traits

A single mutation around 30,000 years ago appears to be responsible for several traits common in East Asian peoples, from thicker hair to denser sweat glands.

The early bird catches... the crab

A new fossil discovery has shown that some early birds evolved teeth adapted for specialized diets.

Eating grass helped early hominins abandon the forests

Our early ancestors in Central Africa, between three million and 3.5 million years ago, munched mainly on tropical grasses and sedges - a much earlier change in diet than previously believed.

Duck-billed dinosaurs had more than a thousand complex teeth

Duck-billed dinosaurs had amazingly complex teeth - much more so than those of cows, horses, and other modern grazers - allowing them to chew tough and abrasive plants with great efficiency.

Right-handedness implies Neanderthal capacity for language

Just like us, Neanderthals were mostly right-handed, new research has confirmed - possibly indicating a capacity for language.

Human ancestor ate bark like a chimp

Bits of food stuck between the teeth of a two-million-year-old South African hominid show that, unlike almost all other known human ancestors, it ate tree bark and other hard foods.

Stem cells used to grow new teeth

Scientists from Japan recently published a paper that details how they successfully grew new teeth from the stem cells of mice.

Sea urchins show how to make self-sharpening tools

Tools that sharpen themselves every time they're used could soon be available, following a discovery about the way sea urchins keep their teeth sharp.