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An artist's illustration of Eosimias sinensis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Eosimiidae
Genus: Eosimias
Beard et al., 1994
Referred species
  • Eosimias centennicus
  • Eosimias dawsonae
  • Eosimias sinensis
  • Eosimias paukkaungensis

Eosimias is an early monkey from Eocene Asia. It is one of the oldest known basal anthropoids, the group that includes monkeys and apes. Its large eyes suggest it was nocturnal unlike other anthropoids, but more like lemurs and bush babies.