Құрып кеткен приматтар туысы - Eosimias

Extinct genus of primates
Automatic taxobox
| fossil range = Middle Eocene Late Eocene
| image = EosimiasDB15. jpg
| image caption = Restoration of E. sinensis
| taxon = Eosimias
| authority = Beard et al., 1994
| subdivision ranks = Species
| subdivision ref = It provides us with a glimpse of a primate skeleton similar to that of the common ancestor of the Haplorhini (including all simians). The name Eosimias is designed to mean "dawn monkey", from Greek eos "dawn" and Latin simius "monkey". Dating has proven this genus lived from 45 to 40 million years ago in the middle Eocene. E. sinensis was tiny, as small as the smallest monkey presently, the pygmy marmoset (Cebuella pygmaea) of South America, and could fit in the palm of a human's hand. Its teeth are considered more primitive than those of early higher primates known from Africa, including Algeripithecus. Due to its highly primitive nature, some paleontologists consider E. sinensis to be evidence that higher primates may have originated in Asia rather than Africa.

Eosimias centennicus was found in 1995 while doing fieldwork in the Yuanqu Basin of the southern Shanxi Province in China. Among these recovered fossils is the first complete lower dentition of Eosimias, catalogued as IVPP V11000. All anatomical information yielded from these fossils confirms the anthropoid like traits found in E. sinensis. Biostratigraphic evidence also suggests these fossils are younger than E. sinensis, which is consistent with the anatomy of eosiimids because the dentition of E. centennicus is slightly more derived than that of E. sinensis. Analysis of these remains has led to the conclusion it was the largest of the known species of Eosimias, yielding a body mass ranging from Stratigraphic evidence also shows E. dawsonae is older than E. centennicus.

Additionally, an expedition team discovered evidence of a new, small eosimiid from Myanmar in 1999. The new specimen, represented by a right heel bone cataloged as NMMP 23, was found in wash residue in the Pondaung Formation. This specimen is very morphologically similar to the Eosimias discovered in the Shanghuang region of China. The best estimate for NMMP 23 includes an overall mean weight of about 111 grams, which places it in the upper sized end of Eosimias fossils discovered. The presence of eosimiid in Myanmar, as well as a high species diversity found in China leads to an apparent conclusion that they had a relatively wide distribution.