Twins are pretty rare, accounting for just 3% of births in the U.S. these days. But new research shows that for primates 60 ...

However, 60 million years ago, having twins was the norm among primates, which changed everything anthropologists understood ...

A recent study has uncovered the surprising evolutionary origin of the mammalian outer ear, linking it to the gills of ancient fish and marine invertebrates. The research reveals that both structures ...

Scientists have unearthed a remarkable fossil of a gorgonopsian, a saber-toothed predator they believe to be the oldest ever discovered.

Evolution is often depicted as a steady forward march from simple to complex forms. But new research shows that certain ferns ...

A saber-toothed predator from over 270 million years ago has been unearthed on Mallorca. The fossil represents the ...

Learn how a variety of tooth shapes drove evolution across multiple kinds of mammals.

Saber-toothed predators—best known from the infamous Smilodon—evolved multiple times across different mammal groups. A study ...

We have been researching the evolution of primate litter size – how many babies grow during each pregnancy – for the past several years. To study mammal evolution and reproductive life history ...

Discover the fascinating evolutionary story behind the human outer ear, which evolved from fish gills. Learn how nature ...