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Individual differences |
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The simians (infraorder Simiiformes) are the "higher primates" very common to most people: the monkeys and the apes, including humans. Simians tend to be larger than the "lower primates" or prosimians.
Classification and evolutionEdit
The simians are split into three groups. The first division is literally as wide as the Atlantic Ocean. The New World monkeys in Platyrrhini parvorder split from the simian line about 40 million years ago (mya), leaving the Catarrhini parvorder occupying the Old World. This group split about 25 mya between the Old World monkeys and the apes. Earlier classifications split the primates into two large groups: the "Prosimii" (strepsirrhines and tarsiers) and the simians in "Anthropoidea"(an'thro-poy'de-a)(Gr. anthropos, man).
- ORDER PRIMATES
- Suborder Strepsirrhini: non-tarsier prosimians
- Suborder Haplorrhini: tarsiers, monkeys and apes
- Infraorder Tarsiiformes
- Infraorder Simiiformes
- Parvorder Platyrrhini: New World monkeys
- Parvorder Catarrhini
- Groves, Colin (16 November 2005). Wilson, D. E., and Reeder, D. M. (eds) Mammal Species of the World, 3rd edition, 128-184, Johns Hopkins University Press. ISBN 0-801-88221-4.
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