Are Old World monkeys catarrhines?

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.

How are Cercopithecines different from Colobines?

Though the numbers of genera are comparable, cercopithecines are generally more ecologically flexible, widespread, and well-studied than colobines. They include both arboreal and semi-terrestrial forms and inhabit the greatest variety of habitats of any major primate group.

What is the dental formula for the platyrrhines?

2.1.3.2
In platyrrhine species, there are 3 premolars and 2 or 3 molars. This results in a dental formula of 2.1. 3.2 or 2.1. 3.3.

Where did catarrhines come from?

Abstract. The catarrhines are a group of anthropoid primates comprising the Old World monkeys, apes, and humans. The earliest record of fossil catarrhines, the propliopithecoids, comes from the Early Oligocene of Egypt (29–32 million years ago (mya)).

Are catarrhines larger than platyrrhines?

Body Size. While platyrrhines have comparatively small body sizes, catarrhines have large body sizes.

Are orangutans platyrrhines?

Catarrhines are simians belonging to the parvorder Catarrhini. They are characterized by having a narrow nose. Their nostrils are close together as opposed to platyrrhines that have a flat-bridged nose. Catarrhines include gibbons, orangutans, gorillas, chimpanzees, and humans.

How are catarrhines and platyrrhines similar?

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. They have larger brains relative to their body size than other animals, and males tend to be larger than females.

Are platyrrhines larger than catarrhines?

Furthermore, the nostrils of platyrrhines are farther apart and they point outward while the nostrils of catarrhines are closer together and they point down. In addition, platyrrhines have a large body size in comparison to catarrhines.

What do the Catarrhines include?

Catarrhines include gibbons, orangutans, gorillas, chimpanzees, and humans. Two superfamilies that make up the parvorder Catarrhini are Cercopithecoidea (Old World monkeys) and Hominoidea (apes).

Are baboons Catarrhines?

Baboons are the biggest of the old world monkeys, especially the males. The Catarrhine family includes more folivores. They share their habitats with prosimians and apes, so there’re a lot of niches lying around which aren’t filled by the old world monkeys since some other primate filled it first.

Are chimpanzees Catarrhines?

What are platyrrhines and catarrhines?

Platyrrhines and catarrhines are the two parvorders of the infraorder Simiiformes, which is more recently known as Anthropoidea. Therefore, they are anthropoids with flat noses. Moreover, anthropoids are one of the infraorder of the suborder Haplorhines.

What are the characteristics of a catarrhine?

Moreover, the other characteristic features of catarrhines include two premolar teeth in each quadrant, short tail in Old World monkeys and no tail in apes, narrow nasal septum, opposable thumb, and the presence of a tubular ectotympanic bone.

Where do platyrrhines live?

Platyrrhines are one of the two parvorders of anthropoids of the infraorder Anthropodea. This parvorder includes New World monkeys, who originated 40 million years ago in South America. Generally, New World monkeys live in Mexico and Central and South America.

Where do catarrhines live?

Geographic Distribution of the Catarrhines. Old world monkeys are found throughout tropical Africa and Asia. The only exceptions are the macaques- some species live in Japan and others in northern Africa.