prosimian - définition. Qu'est-ce que prosimian
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Qu'est-ce (qui) est prosimian - définition

OBSOLETE TAXONOMIC GROUP
Prosimians; Prosimii; Prosimia

prosimian         
[pr??'s?m??n]
¦ noun Zoology a primate of a suborder (Prosimii) that includes the lemurs, lorises, bushbabies, and tarsiers.
Origin
C19: from pro-2 + simian.

Wikipédia

Prosimian

Prosimians are a group of primates that includes all living and extinct strepsirrhines (lemurs, lorisoids, and adapiforms), as well as the haplorhine tarsiers and their extinct relatives, the omomyiforms, i.e. all primates excluding the simians. They are considered to have characteristics that are more "primitive" (ancestral or plesiomorphic) than those of simians (monkeys, apes, and humans).

Simians emerged within the Prosimians as sister group of the haplorhine tarsiers, and therefore cladistically belong to this group. 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 to illustrate the behavioral ecology of tarsiers relative to the other primates.

Prosimians are the only primates native to Madagascar, but are also found throughout Africa and in Asia.