The primate infraorder Simiiformes, or Anthropoidea, is composed of two parvorders: Catarrhini (Old World Monkeys and apes) and Platyrrhini (New World Monkeys). In other words, Simiiformes is a clade that includes all haplorhine species except for the tarsiiformes. "Simians" exhibit the following characteristics: a fused mandible, a postorbital septum, fused frontal bones, no grooming claw, more mobile faces, forward facing eyes, and relatively large brain size. All simian primates originate in Asia or Africa.
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