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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.
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 ...
Simians are thus distinctly closer related to tarsiers than lemurs are. Strepsirrhines bifurcated some 20 million years earlier than the tarsier - simian bifurcation. However, simians are traditionally excluded, rendering prosimians paraphyletic. Consequently, the term "prosimian" is no longer widely used in a taxonomic sense, but is still used ...
Below is a cladogram with some extinct monkey families. [48] [49] [50] Generally, extinct non-hominoid simians, including early catarrhines are discussed as monkeys as well as simians or anthropoids, [41] [9] [42] which cladistically means that Hominoidea are monkeys as well, restoring monkeys as a single grouping. It is indicated approximately ...
Azibiidae is an extinct family of fossil primate from the late early or early middle Eocene from the Glib Zegdou Formation in the Gour Lazib area of Algeria.They are thought to be related to the living toothcombed primates, the lemurs and lorisoids (known as strepsirrhines), although paleoanthropologists such as Marc Godinot have argued that they may be early simians (monkeys and apes).
Despite the world's last captive thylacine dying in 1936, the secretive animal wasn't declared extinct until 1986. More recently in 2007 the Baiji dolphin , a rare river dolphin native to China ...
Due to the lack of fossils linking simians to the earliest haplorrhines, a more recently discovered stem group called eosimiids found in Asia are thought to have dispersed to Africa and evolved into simians. Eosimiids were very small and similar to tarsiers, though their dentition more closely resembles that of simians.
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.