What is the difference between Catarrhine and Platyrrhine?

What is the difference between Catarrhine and Platyrrhine?

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.

Are humans Catarrhines?

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

Is Platyrrhine an arboreal?

New World monkeys (infraorder Platyrrhini) are arboreal and relatively small-bodied, ranging in size from approximately 100g (the pygmy marmoset [Cebuella pygmaea]) up to 10kg (the muriqui [Brachyteles arachnoides] and spider monkey [Genus Ateles]).

How did platyrrhines get to South America?

More Than 30 Million Years Ago, Monkeys Rafted Across the Atlantic to South America. In a strange twist of evolutionary history, the ancestors of modern South American monkeys such as the capuchin and woolly monkeys first came to the New World by floating across the Atlantic Ocean on mats of vegetation and earth.

Do Colobines have cheek pouches?

Unlike the other subfamily of Old World monkeys, the Cercopithecinae, they do not possess cheek pouches.

Is baboon a catarrhine?

Moreover, living catarrhines are much more terrestrial than other groups of prosimians and monkeys, as many species, such as some baboons, some mangabeys, many guenons, some langurs, gorillas, and humans, make extensive to exclusive use of the ground (Fleagle 2013).

Is a spider monkey a Platyrrhine?

Prehensility has evolved at least two distinct times in platyrrhines, in the Atelidae family (spider monkeys, wooly spider monkeys, howler monkeys, and wooly monkeys), and in capuchin monkeys (Cebus).

What do capuchin monkeys do all day?

Capuchins—considered the smartest of the New World monkeys—are diurnal (active during the day), social, and territorial. They spend most of their waking hours searching for food, urinating to mark their territory, and hanging out in trees.

Why are there no primates in North America?

Even though the Isthmus of Panama made it technically possible for monkeys to move into the US, they didn’t because they had evolved over millions of years to prefer a tropical climate full of trees. Since the majority of North America doesn’t offer these conditions – or better ones – the New World Monkeys stayed put.

Why is the gibbon not a great ape?

Gibbons are not monkeys. They are part of the ape family and are classified as lesser apes because they are smaller than the great apes. The great apes are bonobos, chimpanzees, gorillas, humans, and orangutans. Gibbons are famous for the swift and graceful way they swing through the trees by their long arms.