A UT San Antonio-led international research team has identified chitin, the primary organic component of modern crab shells ...

Lipstick vines in Taiwan look different from their red-flowered relatives. When scientists dug into the family tree, they uncovered an evolutionary mystery.

CT scans also indicate Archaeopteryx had nerve endings in the end of its beak—part of what’s known as a bill-tip organ. Again ...

Ancient skull reveals our ears began evolving 50 million years earlier than thought, inside the jaw of a 250-million-year-old ...

In the realm of marine biogeography, there is a widely held scientific principle: the Atlantic and Indo-Pacific oceans are ...

The findings represent the oldest complete set of genetic information from this bacterial group and shed light on its ...

While Thrinaxodon liorhinus didn’t yet have the sophisticated hearing equipment of modern mammals, it shows that eardrums began evolving much earlier than assumed.

We often tell ourselves a comforting story about the history of disease: it’s the price of civilization. For most of human existence, we were healthy, free-roaming hunter-gatherers. It was only when ...

Analysis of a shin bone found in a rock cave in Colombia suggests the sexually transmitted disease is much older than previously believed.

The newly described specimen is a partial left mandible plus a molar crown, dated to about 2.6 million years ago using multiple methods, making it one of the oldest Paranthropus fossils known. The ...

In the long history of life on Earth, one of the biggest turning points came when our distant ancestors stood tall—literally. The way mammals stand and walk today, with limbs tucked neatly under the ...

Before dinosaurs walked the Earth and tens of millions of years before the first mammals appeared, distant mammal relatives with long, serrated canine teeth were the dominant carnivores on land.