1. By: Kira Nishi-Beckingham

2. What is Cercopithecoidea?
Cercopithecoidea is a family of mammals that actually
means Old World Monkeys. Organisms in this family,
like in all the other families, have specific characteristics
that make them apart of this specific family.

3. CharacteristicsCercopithecoids all have tails, most of which are long.
They all have a narrow nose and palate, and have legs
that are the same length or longer than their arms.
Cercopithecoids’ molars have two cusps (are
bilophodont). Cercopithecoids are also laterally
compressed with longer and narrower torsos and a
narrow pelvis.

4. Biomes
The Cercopithecoids are found in around three
biomes. Grassland, Tropical Rain Forest, and
Temperate Deciduous Forest.

5. Food Web
Baboons are one of the
many species that make up
the Cercopithecoidea family.
Here is a food web showing
a baboon and it’s transfer of
energy. The baboon recieves
energy from the grass,
grasshoppers, and the acacia
tree. It gives energy to the
hyena and lion. The baboon
is a secondary consumer.

6. Competition
The Cercopithecoidea family has a lot of competition for
food as they are omnivores. Omnivores are organisms
that eat plants and animals. Any organism that eats grass,
trees, fruits, or insects are their competition. Even insects
can be their competition if there are too many eating the
grass!

7. Biodiversity
Cercopithecoids (Old World Monkeys) are closely
related to New World Monkeys and Apes and Humans.
However, they did branch off from the same species as
Lemurs, Lorises, and Tarsiers.

8. Adaptive Radiation
From the family Cercopithecoidea, there are two subfamilies. These
are the Cercopithecines and Colobines. Colobines have longer tails,
longer legs, short thumbs, a complex stomach that has four chambers,
a deeper jaw, and more space between their eyes, Cercopithecines on
the other hand have short tails, legs the same length as their arms, a
simple stomach with only one chamber, and pouches in their cheeks
used to store food. In each subfamily there are two types, African and
Asian. In each of those groups, there are many different genuses.

9. Adaptations
Colobines (one of the subfamilies)
have four stomachs that work
similar to a cow’s. These allow the
monkeys to gain a lot of nutrients
from leaves, which primates are
not usually able to do.
Cercopithecines, the other subfamily, have
cheek pouches called buccal pouches which
are able to hold about a stomach full. These
pouches are good for grabbing food so they can
leave and eat somewhere safe. This also helps
prevent competition among the groups as if
they can grab a meal, they won’t have to share.

10. Evolution
All of these families came from the same organism at one
point. As you can see, it started off the same, but very quickly
branched off into three groups. The Old World monkeys came
from the same branch as the New World monkeys as well as
Apes and humans.

11. Primary and Secondary Succession
The organisms in the Cercopithecoidea family heavily rely on
plants as their source of food and energy. They eat plants which
would be gone if a succession happened as well as organisms
that rely on plants as their main source of energy. If a primary
and/or secondary succession happened, the organisms in the
Cercopithecoidea family would not be able to survive that area.
Secondary
Succession


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