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

You don't have to be a genius: anemones have been using human genes to form their bodies for 600 million years.

A millimeter-sized sea animal could hold clues to the evolution of the human nervous system. While placozoans are simple animals only as big as a grain of sand, the blobs have unique cells that could ...

Evidence of a worm-like creature about the size of a grain of rice has been uncovered in South Australia, and researchers believe it is the oldest ancestor on the family tree that includes humans and ...