What characteristics describe New World monkeys?

The scientific name for New world monkey, Platyrrhini, means ‘flat nosed’, therefore their noses are flatter, with side facing nostrils, compared to the narrow noses of the Old World monkey. Most New world monkeys have long, often prehensile tails.

What is the difference between Old World and New World monkeys?

The New World monkeys are the platyrrhines (“flat-nosed”), a group comprising five families. New World monkeys have broad noses with a wide septum separating outwardly directed nostrils, whereas Old World monkeys have narrow noses with a thin septum and downward-facing nostrils, as do apes and humans.

Which characteristics is are seen in new monkeys and not in Old World monkeys?

What kind of locomotion? Characteristic seen in some New World monkeys, but not Old World monkeys. New world monkeys are almost exclusively arboreal, and some never come to the ground. Like the old world monkeys, all except one species are diurnal.

What are 5 characteristics of primates?

Primates are distinguished from other mammals by one or more of the following traits: unspecialized structure, specialized behaviour, a short muzzle, comparatively poor sense of smell, prehensile five-digit hands and feet possessing flat nails instead of claws, acute vision with depth perception due to forward-facing …

Which is the only primate with a flat nose?

The five families are ranked together as the Ceboidea, the only extant superfamily in the parvorder Platyrrhini. Platyrrhini means flat-nosed, and their noses are flatter than those of other simians, with sideways-facing nostrils. Monkeys in the family Atelidae, such as the spider monkey, are the only primates to have prehensile tails.

What do monkeys have in common with other primates?

They also share in common the fact that they have sacculated stomachs . That is to say, their stomachs have “saccules,” or sack-like compartments, in which bacteria and unusual combinations of enzymes break down plant cellulose, thereby providing more useable calories. Their stomachs also contain more acid than do those of other monkeys.

Which is the most prominent phenotypic feature of New World monkeys?

The most prominent phenotypic distinction is the nose, which is the feature used most commonly to distinguish between the two groups. The clade for the New World monkeys, Platyrrhini, means “flat nosed”.

What happens to the genitalia of a primate?

The external appearance of the genitalia undergoes seasonal variation in a number of primates. In the male, swellings of the testes and colour changes of the scrotum occur, and, in the female, swelling and coloration of the vulva and perineal region herald ovulation, sometimes most obtrusively.