Because Toumai's skull looks different from other hominid skulls, some scientists think Toumai represents a whole new species.
Toumai's humanlike face and chimp-sized brain suggest that the development of hominids was not so simple.
Scientists aren't sure where exactly Toumai belongs on our family tree. Toumai could be like a great-great-grandfather - or just a distant cousin. Toumai could also be one of many types of hominids who roamed Earth millions of years ago.