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The order Primates consists of 505 extant species belonging to 81 genera. This does not include hybrid species or extinct prehistoric species. Modern molecular studies indicate that the 81 genera can be grouped into 16 families; these families are divided between two named suborders and are grouped in those suborders into named clades, and some of these families are subdivided into named ...
Worldwide, it is thought that between 100,000 and 200,000 non-human primates are used in research each year, [67] 64.7% of which are Old World monkeys, and 5.5% New World monkeys. [68] This number makes a very small fraction of all animals used in research. [ 67 ]
There are 21 critically endangered primates, seven of which have remained on the IUCN's "The World's 25 Most Endangered Primates" list since the year 2000: the silky sifaka, Delacour's langur, the white-headed langur, the gray-shanked douc, the Tonkin snub-nosed monkey, the Cross River gorilla and the Sumatran orangutan. [239]
List of birds by population ... Tonkin snub-nosed monkey: Rhinopithecus avunculus: 250 [10] CR ... Amongst the world's top 25 most endangered primates. [30]
Old World monkeys are primates in the family Cercopithecidae (/ ˌ s ɜːr k oʊ p ɪ ˈ θ ɛ s ɪ d iː /). Twenty-four genera and 138 species are recognized, making it the largest primate family. Old World monkey genera include baboons (genus Papio), red colobus (genus Piliocolobus), and macaques (genus Macaca).
Members of this family are called cercopithecoids, or Old World monkeys, and include baboons, colobuses, guenons, lutungs, macaques, and other types of monkeys. Cercopithecoidea contains only a single family, Cercopithecidae , and includes nearly half of the species in the suborder Haplorhini , itself one of two suborders in the order Primates.
Albert I – (rhesus monkey) the first primate and first mammal launched on a rocket (a June 18, 1948 V-2 flight), although it did not reach space. Albert II – (rhesus monkey) the first primate and first mammal in space, June 14, 1949. Died upon hitting the ground due to a parachute failure
New World monkeys are small to mid-sized primates, ranging from the pygmy marmoset (the world's smallest monkey), at 14 to 16 cm (5.5 to 6.5 in) and a weight of 120 to 190 g (4.2 to 6.7 oz), to the southern muriqui, at 55 to 70 cm (22 to 28 in) and a weight of 12 to 15 kg (26 to 33 lb).