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Schematic showing the evolutionary relationships and approximate divergence times among the great apes and humans. Ppy, Pongo pygmaeus; Pab, P. abelii; Ggo, Gorilla gorilla; Gbe, G. beringei; Hsa, Homo sapiens; Ppa, Pan paniscus; Ptr, P. troglodytes; Mya, Million years ago.
