Monkeys are arranged into two main groups. That is, new world monkey and old world monkey. Animals that exit in new world monkeys are known as platyrrhines while those that occur in old world monkeys are known as catarrhines. "The new world monkey are found in South America while the Old world monkey are found throughout tropical Africa and Asia"(1). Animals that exist in new world monkey are not the same as those that are existed in Old world monkey. They are differ interms of charecteristics and its behavior.
The new world monkeys are small to medium and those monkeys are "related to apes and humans"(2). The new world monkeys have 3 premolars while on the other hands the old world monkey has 2 molars. All new world monkeys differ slightly from old new world monkeys in many aspects. The important thing is differ in nose."Platyrrhines and catarrhine differ in shape of the nose. New world monkeys have flat nose. The nostrils of new monkey are far apart and open to the side while in the old world monkey, nostrils are closer together:(1)
The new world monkey has big, and it has sharp canines with a distena. Distena means the gap between canines and incisors. Old world monkeys are larg than new world monkey. For examples males baboons are the biggest old world monkey. "According to the hands of new world monkey, thumb lies in line. In the new world monkey, spider monkey has no thumbs. And some of the species have fingernails on big toe. Where as in the old world monkey, thumbs are turn and they are like human, and baboons"(1).
It has finger nails and toenails on all digits. The new world monkeys have relatively large molars. the last molars are relative small. Some they do not have molars. Remember that, the old world monkey have two premolars. “Premolars are found in the mandible side are sectorial” http://www.cabrillo.edu/~crsmith/monkeycomparisons.html
The ear regions of new world monkey, especialy the tympanic membrane, they are connected to external ear by a bony ring while in the old world monkeys, tympanic membrane are connected to external near by a bony tube.”(1)
“In the new world monkey some species have pensile tails while in the old world monkey all have tails but lack of prehensility feature. Few species in the new world monkey have one male multifemale group like many of the old world monkey species. New world monkey have scent glands rely more on scent to mark territories than old world monkey.”(1
“New world monkey confined to arboreal habitats and rely heavily on fruit and less on foliage with compare to old world monkeys. Old world monkeys spend some or most of the day on the ground and they tolerate in a wider range of habitats from rainforest through savannah fringe”(2
). Most of the new world monkeys are closely related. Cebidae and Atelidae families are found in new world monkey. Cidibae include animas like, squirrel, capuchin, owl and monkeys. Atelidae include animals like spider and howler monkeys.
1. Anthropology 1, New world (America) and Old world (Africa and Asia) Monkey: A comparison, [Internet] [Cited 2006 May 12] Available from: http://www.cabrillo.edu/~crsmith/monkeycomparisons.html
2. Wikipedia Contributor Monkeys (internet) Wikipedia, the free Encyclopedia, 2006 May 12, 17:33 UTC [Cited 2006, May 12, 17:25] Available from: http://en.wikipedia.org/wiki/Monkeys
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