For an explanation of very similar terms, see Adapiformes and Lemuriformes.
Strepsirrhini
Temporal range: 55.8–0 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Early Eocene to Present[1]
A sample of strepsirrhine diversity; eight biological genera are depicted (from top, left to right): Lemur, Propithecus, Daubentonia, Varecia, Microcebus, †Darwinius, Loris, Otolemur
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Primates
Suborder:
Strepsirrhini É. Geoffroy, 1812
Infraorders
†Adapiformes Lemuriformes[a] (See text)
sister: Haplorhini
●Eocene-Miocene fossil sites Range of extant strepsirrhine primates
Strepsirrhini or Strepsirhini (/ˌstrɛpsəˈraɪni/ⓘ; STREP-sə-RY-nee) is a suborder of primates that includes the lemuriform primates, which consist of the lemurs of Madagascar, galagos ("bushbabies") and pottos from Africa, and the lorises from India and southeast Asia.[a] Collectively they are referred to as strepsirrhines. Also belonging to the suborder are the extinct adapiform primates which thrived during the Eocene in Europe, North America, and Asia, but disappeared from most of the Northern Hemisphere as the climate cooled. Adapiforms are sometimes referred to as being "lemur-like", although the diversity of both lemurs and adapiforms does not support this comparison.
Strepsirrhines are defined by their "wet" (moist) rhinarium (the tip of the snout) – hence the colloquial but inaccurate term "wet-nosed" – similar to the rhinaria of canines and felines. They also 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. Strepsirrhine primates produce their own vitamin C, whereas haplorhine primates must obtain it from their diets. Lemuriform primates are characterized by a toothcomb, a specialized set of teeth in the front, lower part of the mouth mostly used for combing fur during grooming.
Many of today's living strepsirrhines are endangered due to habitat destruction, hunting for bushmeat, and live capture for the exotic pet trade. Both living and extinct strepsirrhines are behaviorally diverse, although all are primarily arboreal (tree-dwelling). Most living lemuriforms are nocturnal, while most adapiforms were diurnal. Both living and extinct groups primarily fed on fruit, leaves, and insects.
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Strepsirrhini or Strepsirhini (/ˌstrɛpsəˈraɪni/ ; STREP-sə-RY-nee) is a suborder of primates that includes the lemuriform primates, which consist of the...
tarsiers and the simians (Simiiformes or anthropoids), as sister of the Strepsirrhini ("moist-nosed"). The name is sometimes spelled Haplorrhini. The simians...
suborder Haplorhini, while the strepsirrhines are placed in suborder Strepsirrhini. Strong genetic evidence for this is that five SINEs are common to all...
would not be within the Strepsirrhini lineage as hitherto assumed but qualify as a stem "missing link" between Strepsirrhini and Haplorrhini. However...
the sole extant infraorder of primate that falls under the suborder Strepsirrhini. It includes the lemurs of Madagascar, as well as the galagos and lorisids...
and galagos are not monkeys, but strepsirrhine primates (suborder Strepsirrhini). The simians' sister group, the tarsiers, are also haplorhine primates;...
strepsirrhines, tarsiers, and the early primates. Order Primates Suborder Strepsirrhini: non-tarsier prosimians Infraorder †Adapiformes: extinct "lemur-like"...
five genera and sixteen species of lorisid. Order Primates Suborder Strepsirrhini: non-tarsier prosimians Infraorder Lemuriformes Superfamily Lemuroidea...
paraphyletic: Prosimians contain two monophyletic groups (the suborder Strepsirrhini, or lemurs, lorises and allies, as well as the tarsiers of the suborder...
social systems. Primates is divided into two suborders: Haplorrhini and Strepsirrhini. The suborders are further subdivided into clades and families. Haplorrhini...
Adolphi Friderici Regis Lemurs are primates belonging to the suborder Strepsirrhini. Like other strepsirrhine primates, such as lorises, pottos, and galagos...
There are currently 1,258 genera, 161 families, 27 orders, and around 5,937 recognized living species of mammal. Mammalian taxonomy is in constant flux...
This is a list of African primates, containing all recent species of primates found in Africa including Madagascar. According to the IUCN/SSC Primate Specialist...
within the Strepsirrhini lineage as hitherto assumed, but would qualify as a transitional fossil (a "missing link") between Strepsirrhini and Haplorrhini...
the Primates (while Lemur would be roughly equivalent to the Suborder Strepsirrhini). Homo, Lemur, and Vespertilio have survived as generic names, but Simia...
Tarsiers have a grooming claw on second and third toes. In the suborder Strepsirrhini, which includes lemurs, galagos and lorises, the grooming claw is on...
This is a list of fossil primates—extinct primates for which a fossil record exists. Primates are generally thought to have evolved from a small, unspecialized...
phylogenetically divided into those, such as lemurs, with the primitive rhinarium (Strepsirrhini) and the dry-nosed primates (Haplorhini, including apes and thus humans)...
(1812). "Suite au Tableau des Quadrummanes. Seconde Famille. Lemuriens. Strepsirrhini". Annales du Muséum National d'Histoire Naturelle (in French). 19: 156–170...
and their position in the Order Primates: Order Primates Suborder Strepsirrhini: lemurs, lorises, galagos, etc. Suborder Haplorrhini: tarsiers + monkeys...
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