platyrrhine(redirected from platyrrhinian)
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having a broad nose, with a nasal index above 53.
1. Characterized by a nose of large width in proportion to its length.
2. Denoting a skull with a nasal index between 53 and 58.
[platy- + G. rhis, nose]
1. Of or belonging to the primate infraorder Platyrrhini, characterized by widely separated nostrils that generally open to the side, and including the New World monkeys such as the spider monkeys, marmosets, and titis.
2. Having a broad flat nose.
A platyrrhine monkey.