Dates obtained from fossil animals found above ... technique that will directly date the bone. The jawbone is currently recorded as a modern human, an identification that goes back to 1927.

It shows the facial skeleton and nerves of each animal ... conventional views on upper jaw evolution. Traditionally, it was believed that mammalian jaw bones were directly inherited from reptiles.

The blue whale is regarded as the largest animal ... The jawbone was found in 2020 by Justin Reynolds and his 11-year-old daughter, Ruby. She was the one who discovered the first piece of bone ...