Tooth development and weaning in chimpanzees not as closely related as once thought

Using a first-of-its-kind method, scientists have used digital photographs to show that, after the eruption of their first molar tooth, many juvenile chimps continue to nurse as much, if not more, than they had in the past. The research challenges earlier studies that linked juvenile chimps' tooth development with their weaning as a rough proxy for understanding similar developmental landmarks in the evolution of early humans.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/dentistry/~3/s-ijOV_0T10/130128151926.htm

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