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Primates primates

Tarsiidae tarsiers

There are 7 extant species of tarsiers, all in the genus Tarsius. Tarsier species are all similar in size, morphology, and ecology. They are all small, nocturnal, predaceous primates specialized for leaping and clinging. Tarsiers are the most "primitive" of the haplorrhine primates, with fossils dating to the Eocene. They were once widely distributed, fossils are known from North America, Europe, North Africa, and Asia. Tarsiers are found only in archipelagos in southeast Asia, including Sumatra, Borneo

Galago galagos and lesser bushbabies

grip. Unlike other primates (order Primates), lesser galagos cannot move their digits independently of each other. They have large, round eyes with a large number of rod cells, which gives them exceptional low light vision. However, they have dichromatic vision meaning they are red-green color blind. Lesser galagos can leap large distances using their long hind legs, and can often be found sitting upright and clinging to vertical branches. Many species are indistinguishable from each other morphologically

Tarsius tarsiers

attempted revised taxonomy. This taxonomic discrepancy is strongly supported by data collection of physiological attributes such as coat colors, tail lengths, and size, as well as molecular data (Groves and Shekelle, 2010). Tarsiers are small furry primates with large red eyes, small dentition, and short limbs and hands relative to other primates (Groves, 2010). Tarsier eye size, relative to body size, is the largest of any mammal and directly correlates to their nocturnal behavior (Gillian, et al. 2016

Pitheciidae titi monkeys, sakis, and uakaris

may groom their young and females may have help from subadult females. Callicebus is unusual among New World primates in that males provide the majority of care for young, only returning them to their mothers to nurse. Young are typically carried ventrally for their first few months, after which they are transferred to being carried on the back and begin to locomote on their own away from caregivers. Titis (Callicebus), the smallest of the pitheciids, have lived more than 25 years in captivity. Uakaris

Indriidae indris, sifakas, and relatives

especially in indris and sifakas, in which they jump on their two rear feet while holding the arms above their heads or in front of their bodies. Like other primates, indriids rely heavily on vision for finding food, navigating, and in communication. Indriids have excellent, binocular vision. Woolly lemurs are nocturnal and have excellent vision in low light. Vocalizations play an important role in social communication as well. Indris sing melodious songs that can be heard up to 2 km away. Members of groups

Cebidae marmosets, tamarins, capuchins, and squirrel monkeys

sub-tropical areas of Central and South America. Cebids are found in a variety of forested habitats in tropical and sub-tropical areas. They are found in dense, evergreen tropical forests to dry forests. Altitudinal range varies from sea level to 2000 meters in squirrel monkeys and sea level to 2700 meters in capuchins. Marmosets and tamarins are mainly found in primary, lowland wet forests. Cebids include some of the smallest primates and the smallest true monkeys, with pygmy marmosets averaging masses of

Eulemur brown lemurs

true lemur" family, Lemuridae. Lemurs are considered a part of the suborder Strepsirrhini, within the order Primates. Lemurs (family Lemuridae) are endemic to Madagascar and are the only primate group present on the island. Two species in the genus Eulemur, mongoose lemurs (Eulemur mongoz) and common brown lemurs (E. fulvus), are also found in the Comoro Islands, although they were most likely introduced by humans. Evidence suggests that ancestral primates of the suborder Strepsirrhini ranged across what is

Daubentoniidae aye-aye

Galagidae bushbabies and galagos; dwarf bushbabies and dwarf galagos

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Scansoriality in Mammals

Another method to prevent toppling entirely is to move suspended below the branch instead of balanced on top of it. Three-toed sloths [Bradypodidae|(Bradypus spp.)] are an excellent example of this behavior, as their hook-shaped claws are ideal for suspensory locomotion. Many primates move through the trees by brachiation, a familiar form of hanging and swinging from branch to branch commonly seen in primates like gibbons (Hylobates spp.). This movement requires grasping hands and a pectoral (shoulder

Differentiation of teeth in an individual

mammals (at least in terms of number of species!), the rodents, use their incisors in this manner, but chisel-like incisors followed by a diastema are also seen, for example, in lagomorphs (rabbits and pikas), hyraxes, some primates (e.g., the aye-aye; also in an extinct group, the plesiadapids), and in some members of a large, rodent-like group of early mammals (now extinct) called the multituberculates. Other modifications of incisors include the scalpel incisors of vampire bats, the tusks of elephants

The Diversity of Cheek Teeth

the teeth look like an old-fashioned washboard, a condition referred to as loxodont. In the simplest cases, such as the tapir (above), it is still easy to identify protocone, paracone, metacone, and hypocone. In more extreme cases this is no longer possible. A common lophodont pattern in primates is for the surface of the tooth to be made up of two main transverse lophs, a condition called bilophodont or biscuspid (e.g., Cercopithecidae). In the baboon, below, the lophs run between protocone and paracone

Classification

Primates primates