This is a good take which, IMHO, fits the dominant out-of-Africa data
Quote:
>I think we should take seriously that Graecopithecus premolar root morphology may be yet another demonstration that supposed “hominin” characters actually evolved in other branches of apes during the Miocene. This feature is far from alone. Many other features that supposedly link Ardipithecus or Sahelanthropus with hominins are also found in other Miocene fossils. My colleagues and I documented some of these Miocene ape-like features in Sahelanthropus in 2006.
So the tooth-form that appears only in hominins could not be a marker, but a very similar tooth-form could have developed in non-hominins
Quote: >I think we should take seriously that Graecopithecus premolar root morphology may be yet another demonstration that supposed “hominin” characters actually evolved in other branches of apes during the Miocene. This feature is far from alone. Many other features that supposedly link Ardipithecus or Sahelanthropus with hominins are also found in other Miocene fossils. My colleagues and I documented some of these Miocene ape-like features in Sahelanthropus in 2006.
So the tooth-form that appears only in hominins could not be a marker, but a very similar tooth-form could have developed in non-hominins