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Platyrrhines also differ from Old World monkeys in that they have twelve premolars instead of eight; having a dental formula of 2.1.3.3 2.1.3.3 or 2.1.3.2 2.1.3.2 (consisting of 2 incisors, 1 canine, 3 premolars, and 2 or 3 molars).
Brown spider monkey (Ateles hybridus) Platyrrhini is a parvorder of primates. Members of this parvorder are called platyrrhines, or New World monkeys, and include marmosets, tamarins, and capuchin, squirrel, night, titi, saki, howler, spider, and woolly monkeys. Platyrrhini is one of three clades that form the suborder Haplorrhini, itself one of two suborders in the order Primates. They are ...
The simians include catarrhines (Old World monkeys and apes, including humans), and the platyrrhines (New World monkeys). Haplorhini was proposed by Pocock in 1918 when he realized the tarsiers were actually sister to the monkeys rather than the lemurs, also following findings of Hugh Cuming 80 years earlier and Linnaeus 160 years earlier.
Larger hyoids decrease space between formant, and offers impression of larger body size. [5] They have a flat cranial shape due to a folivorous diet and an advanced vocal system. Their brain growth is posterior rather than superior or inferior as in other platyrrhines. [6]
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 ...
The smallest Old World monkey is the talapoin, with a head and body 34–37 centimetres (13–15 in) in length, and weighing between 0.7 and 1.3 kilograms (1.5 and 2.9 lb). The largest is the male mandrill, around 70 centimetres (28 in) in length, and weighing up to 50 kilograms (110 lb) [ 6 ] Old World monkeys have a variety of facial features ...
In earlier classification, New World monkeys, Old World monkeys, apes, and humans – collectively known as simians or anthropoids – were grouped under Anthropoidea (/ ˌ æ n θ r ə ˈ p ɔɪ d i. ə /; from Ancient Greek ἄνθρωπος (ánthrōpos) 'human' and -οειδής (-oeidḗs) 'resembling, connected to, etc.'), while the strepsirrhines and tarsiers were grouped under the ...
The Pitheciidae (/ p ɪ θ ɪ ˈ s aɪ. ɪ d iː /) are one of the five families of New World monkeys now recognised. Formerly, they were included in the family Atelidae.The family includes the titis, saki monkeys and uakaris.