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Below is a phylogenic tree with some of the extinct simian species with the more modern species emerging within the Eosimiidae. Anthrasimias is not shown. The Simians originated in Asia while the crown simians were in Afro-Arabia. [7] [8] [4] [9] [10] It is indicated approximately how many million years ago (Mya) the clades diverged into newer ...
Although it retains primitive characters such as a small body size (mean estimates range from 67–137 grams (2.4–4.8 oz)) and an unfused mandibular symphysis, it appears to be a primitive simian based on its dental characteristics, including a lower dental formula of 2.1.3.3. [4] Eosimias sinensis has incisors which are vertical and spatulate.
†Eosimiidae †Aseanpithecus; Below is a cladogram with some of the extinct simian species with the more modern species emerging within the Eosimiidae. The simians originated in Asia, while the crown simians were in Afro-Arabia. [13] [14] [5] [15] [7] [16] It is indicated approximately how many Mya the clades diverged into newer clades.
Phileosimias ("Eosimias ally") [2] is an extinct genus of primates with two species, P. kamli and P. bahuiorum, that are believed to be amongst the early simians.. Marivaux et al. announced in 2005 their discovery of fossils of two new species, Phileosimias kamali and Phileosimias brahuiorum, found in the Bugti Hills of Pakistan.
The clade formed by Afrotarsiidae and Eosimiidae was designated as the infraorder Eosimiiformes by Chaimanee et al. in 2012. Eosimiiformes are the sister group of crown simians. [ 2 ] However, the classification of Afrotarsius as a stem simian is not accepted by all researchers, and the phylogenetic claims and their implications rest on only ...
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Articles relating to the Simians (anthropoids, higher primates, Simiiformes), an infraorder of primates containing all animals traditionally called monkeys and apes.More precisely, they consist of the parvorders Platyrrhini (New World monkeys) and Catarrhini, the latter of which consists of the family Cercopithecidae (Old World monkeys in the stricter sense) and the superfamily Hominoidea ...
Some of the earliest known true primates are represented by the fossil groups Omomyidae, Eosimiidae, and Adapiformes. [5] The relationship between known fossil primate families remains unclear. A conservative estimate for the divergence of haplorhines (tarsiers, monkeys, apes, and humans) and strepsirrhines is 58 to 63 mya. [6]