Northern Illinois University 
Evolutionary Tree
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From left to right the primate species depicted on the tree are: a lemur (Lemur catta), an adapid (Hoanghonius stehlini), a tarsier (Tarsius bancanus), an omomyid (Shoshonius cooperi), a proto-monkey (Eosimias centennicus), a South American monkey (Saimiri sciureus), an Old World monkey (Mandrillus sphinx), a great ape (Gorilla gorilla), and a human (Homo sapiens).
Graphics by Mark A. Klingler, Carnegie Museum of Natural History
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