While the Jebel Irhoud specimens originally were noted to have been similar to later Aterian and Iberomaurusian specimens, further examinations revealed that the Jebel Irhoud specimens differ from them in that the Jebel Irhoud specimens have a continuous supraorbital torus while the Aterian and Iberomaurasian specimens have a discontinuous supraorbital torus or, in some cases, none at all, and from this, it was concluded that the Jebel Irhoud specimens represent archaic "Homo sapiens" while the Aterian and Iberomaurasian specimens represent anatomically modern "Homo sapiens". Despite this, it was noted that the Jebel Irhoud specimen whose cranium was complete enough to assess, showed "hints of 'modern' basicranial flexion in the relationship of the face and vault", and the teeth of another Jebel Irhoud specimen were subjected to synchrotron analysis that suggested "a modern developmental pattern."