The document summarizes the key differences between Old World monkeys and New World monkeys. New World monkeys have platyrrhine noses with sideways-facing nostrils, prehensile tails used for gripping, and claws instead of nails in some species like tamarins. They are also the only monkeys with prehensile tails. Old World monkeys do not have prehensile tails or other extra limbs. They have catarrhine noses with downward-facing nostrils and are omnivorous.

1. Primates
The Difference Between Old
World Monkeys and New
World Monkeys.
By: Karina Montoya

2. New World Monkeys
 New world monkeys
have flat noses with
nostrils that face to the
side.
 These noses are called
platyrrhine noses.
 The monkey shown to
the right is the Golden
Lion Tamarin showing
off his very distinctive
platyrrhine nose.

3. New World Monkeys’ Tails
 New world monkeys
are the only monkeys
with prehensile tails.
 Most new world
monkeys are arboreal.
 The Emperor Tamarin
to the right has a
perfect example of a
long prehensile tail.

4. New World Monkeys’ Nails
 Most primates have nails
instead of claws.
 The nails help the primate feel
and grab things just like how a
human would.
 The type of primates that are
an exception to this
characteristic are the tamarins.
 This is example of how a
tamarin has claws instead of
nails.
 To the left is another picture of
an Emperor Tamarin using its
claws to climb trees.

5. New World Monkeys’ Tail
 The final new world monkey  Below is the Crested Capuchin
that I saw during my trip to the which moves in brachiation , it
zoo was the Crested also is showing off its very
Capuchin. curled prehensile tail.
 It is usually known as a helper
monkey, because it is usually
a guide animal to a person
who is need of the services.
 It is also one of the most easily
trained primates, therefore it is
used in many commercials and
movies.
 It also has a curled tail that is
prehensile meaning it could be
used as a third arm.

6. Old World Monkeys
 Old world monkeys are just
very different from new
world monkeys.
 For instance they do not
any form of a prehensile
tail, which basically means
the do not have the
advantages of a extra limb.
 To the right is a picture of a
pair of Chimps. As you can
see, they do not have any
form of a tail.

7. Old World Monkeys’ Eating
Habits
 Old world monkeys are
also omnivorous.
 This means that the
primate eats both meat
and
vegetables, fruits, and
plants.
 The chimp to the right
is enjoying a quick and
healthy snack.

8. Old World Monkeys’ Face
 Chimps also have a flat
face.
 This is due to its binocular
vision.
 One more interesting fact
about these chimps is the
fact that they always hunt in
groups.
 The chimp on the top is a
great example of a flat face.
 The chimps on the bottom
show how many of these
chimps hunt in groups in the
wild.

9. Old World Monkeys’ Noses
 Old world monkeys have a very unusual nose.
 This type of primate has a catarrhine nose.
 The nostrils on a catarrhine nose face downwards, where as in a platyrrhine nose they
would face to the side.
 Above are two examples of how the nose of a orangutan differs from the nose of the
Crested Capuchin.
 The one of the left is the Crested Capuchin which has tiny nostrils that face to the side.
 The picture on the right is of a orangutan, which has nostrils that face downwards.

10. Fun Facts !
 The Siamangs to the left
use breakiation to move
around.
 They have throat sacs that
fill with air, and they act like
a chamber to augment.
 The Siamangs most
powerful asset is its very
loud voice.
 It is a arboreal type of
gibbon.