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What is meant by platyrrhine?
Medical Definition of platyrrhine (Entry 1 of 2) 1 : of, relating to, or being any of a division (Platyrrhina) of arboreal New World monkeys characterized by a broad nasal septum, usually 36 teeth, and often a prehensile tail. 2 : having a short broad nose. platyrrhine. noun.
What does platyrrhine the term for New World monkeys mean?
flat nosed
In New World monkeys (the Platyrrhini, meaning “flat nosed”), the nose is broad, and the nostrils are set wide apart, well separated by a broad septum, and point sideways.
Where are platyrrhine found?
Platyrrhines, or New World Monkeys (NWM), are a diverse group of primates currently distributed in the Neotropical region from Mexico to Northern Argentina but excluding the Caribbean islands. They are all arboreal, but exhibit a wide spectrum of locomotor postures as well as body sizes (Fleagle 2013).
What is the difference between a Platyrrhine and a Catarrhine?
Catarrhines and platyrrhines are distinguished by the shape of their nostrils. Catarrhines have narrow downward facing nostrils, while platyrrhines have broad, flat, sideways facing nostrils. There are certain physical features that help set primates apart from other animals.
What is the difference between a platyrrhine and a Catarrhine?
Where do the platyrrhine monkeys and catarrhine monkeys found?
… include the emergence of the catarrhines (Old World monkeys, apes, and humans) in Africa and the platyrrhines (New World monkeys) in South America. The catarrhines are the only group to possess truly opposable thumbs.
Is a lemur a platyrrhine?
There are three major surviving radiations – lemurs and lorises (strepsirhines) and Old World monkeys and apes (catarrhines) occur in Africa and Asia, and New World monkeys (platyrrhines) live in Central and South America – but many species are now threatened with extinction and the fourth radiation consists of only …
What is the difference between Catarrhine and platyrrhine?
What traits define the Catarrhine group?
They are characterized by having a narrow nose. Their nostrils are close together as opposed to platyrrhines that have a flat-bridged nose. Other distinctive features include having flat fingernails and toenails, eight instead of 12 premolars, and lacking prehensile tails.
What is the difference between a catarrhine and a platyrrhine?
How do you tell a platyrrhine from a catarrhine?
Noses and Nostrils Furthermore, platyrrhines have flatter noses with nostrils facing sideways separated by a wide septum while catarrhines have hooked noses with nostrils facing downwards separated by a small septum.
What is a platyrrhine animal?
A platyrrhine animal, esp. the New World monkeys. Of or belonging to the primate infraorder Platyrrhini, characterized by widely separated nostrils that generally open to the side, and including the New World monkeys such as the spider monkeys, marmosets, and titis. Having a broad flat nose.
What is a platyrrhine hominin?
belonging or pertaining to the subdivision of simians that comprises New World monkeys, characterized by noses flatter than those of other simians and with widely separated, side-facing nostrils.Compare catarrhine. Anthropology. a platyrrhine hominin. a platyrrhine animal. QUIZ YOURSELF ON AFFECT VS. EFFECT!
Where did platyrrhine primates come from?
South American platyrrhine primates probably dispersed from either Asian or African catarrhine ancestors about 37-40 million years ago. The next most common type (23%) is platyrrhine or broad nose. Dictionary browser?
What are platyrrhine and catarrhine monkeys?
The platyrrhine and catarrhine monkeys have their primitive ancestor among extinct forms of the Lemuridae. This family embraces the typical Platyrrhine Monkeys, and to it belongs the great majority of the American species.