The term catarrhine, meaning ‘narrow, turned-down nose,’ has been used extensively in the literature to describe Old World monkeys and apes. The term platyrrhine , meaning ‘flat nose,’ refers to the flattened muzzle with broadly spaced, laterally flared nares found in …

The catarrhines (from Ancient Greek katà-, "down", and rhin-, "nose") have nostrils that face downwards. Catarrhines also never have prehensile tails, and have flat fingernails and toenails, a tubular ectotympanic (ear bone), and eight, not 12, premolars, giving them a dental formula of 2.1.2.3 2.1.2.3 , [ 20 ] indicating 2 incisors, 1 canine ...

nose In primate: Snouts, muzzles, and noses …and Old World monkeys (the Catarrhini, meaning “downward nosed”), the nostrils are set close together, point forward or downward, and are separated by a very narrow septum.

2021年6月28日 · 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. Other distinctive features include having flat fingernails and toenails, eight instead of 12 premolars, and lacking prehensile tails.

2019年11月22日 · The main difference between platyrrhines and catarrhines is that platyrrhines are a parvorder of simians that contains flat-nosed primates, including New World monkeys, whereas catarrhines are a parvorder of simians that contains hooked-nose primates including Old World monkeys, apes, and humans.

2019年2月6日 · The two haplorrhine groups, platyrrhines and catarrhines, also vary significantly in their external nose morphology. The platyrrhine nose is characterized by a wider internasal cartilage than that of catarrhine monkeys, with nares that are oriented laterally, as opposed to a frontal orientation in catarrhines (Ankel-Simons, 2007) .

2017年9月23日 · They have obtained their name from the Greek words that describe the placement of the nostrils, which face downward (κάτω (kato) = down + ρίνα (rhina) = nose), as opposed to their sister group, the New World monkeys, or platyrrhines, which bear a broad nose with nostrils facing outward (πλατύς (platy) = broad + ρίνα (rhina ...

2020年2月19日 · 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.

The catarrhines (from Ancient Greek kata-, "down", and rhin-, "nose") have nostrils that face downwards. Catarrhines also never have prehensile tails, and have flat fingernails and toenails, a tubular ectotympanic (ear bone), and eight, not 12, premolars, giving them a dental formula of , indicating 2 incisors, 1 canine, 2 premolars, and 3 ...

The catarrhinos (Catarrhini, from the Greek κατά katá, "downwards" and ρινος rhinós, "nose") are a parvorden of simiiform primates whose main characteristic is having their nostrils open downwards and separated by a thin nasal septum. They also have thirty-two teeth, buttocks covered by brightly colored calluses, and a non-prehensile ...