Australopithecus anamensis
Guide to Sahelanthropus, Orrorin and Ardipithecus
These fossil species between 8 million and 4.4 million years old include some of the earliest members of the hominin lineage.

Guide to Australopithecus species
These ancient human relatives include the first species with evidence of upright walking and running like humans. They represent more than a third of our evolutionary history.

The real story of myosin, jaw muscles, and ancient brains
The provocative idea that our genus arose with a deactivated muscle gene turned out to be wrong.

Presentation on species concepts and the hominin fossil record
On a visit to Charles Darwin's home, I share some perspectives on how paleoanthropologists think about species.
