noun, noun which may take the genitive case particle 'no'
catarrhine; Old World monkey
Scientific term for primates of infraorder Catarrhini, characterized by downward-facing nostrils that are close together. Old World monkeys, apes, and humans are also used. Often contrasted with 広鼻猿類 (platyrrhines/New World monkeys).
See also: 広鼻猿類
Catarrhines include humans and chimpanzees.
The nostrils of catarrhines point downward.
Platyrrhines (New World monkeys) with wide-set, sideways-facing nostrils, in contrast to the close-set, downward-facing nostrils of 狭鼻猿類.
From 狭 (narrow) + 鼻 (nose) + 猿 (monkey) + 類 (group), referring to the narrow nasal septum characteristic of this primate group.