Strepsirrhini or Strepsirhini is a suborder of primates. It includes the lemuriform primates, which consist of the lemurs of Madagascar, galagos and pottos from Africa, and the lorises from India and southeast Asia. Also belonging to the suborder are the extinct adapiform primates that thrived during the Eocene in Europe, North America, and Asia.
About Strepsirrhini in brief
Strepsirrhini or Strepsirhini is a suborder of primates. It includes the lemuriform primates, which consist of the lemurs of Madagascar, galagos and pottos from Africa, and the lorises from India and southeast Asia. Also belonging to the suborder are the extinct adapiform primates that thrived during the Eocene in Europe, North America, and Asia, but disappeared from most of the Northern Hemisphere as the climate cooled. The name was first used by French naturalist Étienne Geoffroy Saint-Hilaire in 1812 as a subordinal rank comparable to Platyrrhini and Catarrhini. Many of today’s living strepsir rhines are endangered due to habitat destruction, hunting for bushmeat, and live capture for the exotic pet trade. The taxonomic name StrepsIRrhini derives from the Greek στρέωION, strepsis, which means ‘turning round’ or ‘nose, snout, nostrils’ and refers to the appearance of the sinuous nostrils on the rhinarium or wet nose. It is sister to Haplorhini, which is a group of primates that evolved from the haplorhine primates near the beginning of the primate radiation between 55 and 90 mya. It was once thought to have evolved from adapids, a more and younger branch of adapid primates from Europe, Scandentia Dermoptera OmomyTarsiformes, and lorisoids.
In the case of lemuriforms, the relatively small brain size and skeletal characteristics, such as their reliance on smell, have historically hindered the understanding of the evolution of mammalian evolution. These views have historically hindered the study of lemurine primates. The lemururs are often portrayed as ‘ferior’, or ‘inferior’ or as examples of ‘basal’ primates or ‘frivolous’ primates, or ‘living fossils’ or ‘flamboyant’ primates. They are actually the descendants of a single species, the Adapiformes Lemurs, which split from Africa to Africa around 47 and 54mya, and later colonized Asia. The living lemuriforms and particularly the galagos and pottos of Madagascar, are inappropriately portrayed as ‘basal’ or ‘inior’ or ‘living fossils’ by some primatologists. They have a smaller brain than comparably sized simians, large olfactory lobes for smell, a vomeronasal organ to detect pheromones, and a bicornuate uterus with an epitheliochorial placenta. Their eyes contain a reflective layer to improve their night vision, and their eye sockets include a ring of bone around the eye, but they lack a wall of thin bone behind it. They produce their own vitamin C.
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This page is based on the article Strepsirrhini published in Wikipedia (as of Nov. 07, 2020) and was automatically summarized using artificial intelligence.
