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Late Miocene Teeth from Middle Awash, Ethiopia, and Early Hominid Dental Evolution

2004; American Association for the Advancement of Science; Volume: 303; Issue: 5663 Linguagem: Inglês

10.1126/science.1092978

1095-9203

Yohannes Haile‐Selassie, Gen Suwa, Tim D. White,

Evolution and Paleontology Studies

Late Miocene fossil hominid teeth recovered from Ethiopia's Middle Awash are assigned to Ardipithecus kadabba. Their primitive morphology and wear pattern demonstrate that A. kadabba is distinct from Ardipithecus ramidus. These fossils suggest that the last common ancestor of apes and humans had a functionally honing canine-third premolar complex. Comparison with teeth of Sahelanthropus and Orrorin, the two other named late Miocene hominid genera, implies that these putative taxa are very similar to A. kadabba. It is therefore premature to posit extensive late Miocene hominid diversity on the basis of currently available samples.