A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

A 113-million-year-old hell ant fossil discovered in northeastern Brazil's Crato Formation represents the oldest known ant specimen in the fossil record. The remarkable preservation reveals ...

The story of primates is a tale of incredible variety and ancient roots, told through the lens of science, DNA, and time itself. These creatures, ranging from massive gorillas to tiny mouse lemurs, ...

What did researchers find? A 1.6-to-1.5-million-year-old skull from Ethiopia combines features from two different stages of ...

Digital reconstruction of a crushed skull from an ancient human relative could rewrite the timeline of human evolution, researchers said. A cranium dubbed Yunxian 2 was found in the Yunxian region of ...

University of Queensland scientists have helped to construct a detailed timeline for bacterial evolution, suggesting some bacteria used oxygen long before evolving the ability to produce it through ...

A team from the University of Illinois has uncovered surprising evolutionary links between the genetic code and tiny protein fragments called dipeptides. By analyzing billions of dipeptide sequences ...

Artificial cast of Germanasterias amplipapularia, holotype Nr. 18869a–b in abactinal view (A), and actinal view (B). (C) Details of the disc and arm in abactinal view. (D) Detail of the arms and oral ...

A digital reconstruction of a million-year-old skull suggests humans may have diverged from our ancient ancestors 400,000 years earlier than thought and in Asia, not Africa, a study found. The ...