Haplorhini

Translingual right|thumb|Callicebus brunneus species(infraorder Simiiformes infraorder) Alternative forms Haplorrhini suborder Etymology From mul grc ἁπλός simple + grc ῥινός nose, referring to the lack of a rhinarium (a wet nose, which is found in many mammals, including strepsirrhine primates).2007 Ankel-Simons, F. Primate Anatomy 978-0-12-372576-9 394–395 Those primates with a philtrum and wet rhinarium have therefore been classified together as Strepsirrhini (Geoffroy, 1812) because of the structural similarity of these two characters in the nasal area. (Strepho means 'turned inward' in Greek and rhinos is Greek for 'nose.') In those primates whose snout is reduced in length and whose incisors are positioned close to each other, the rhinarium disappears. This is the case for tarsiers and anthropoids among primates, and therefore they were labeled together as Haplorhini (haplo means 'simple, single' in Greek). Proper noun suborder order Primates tarsiers, monkeys, and apes Usage notes The spelling with a single r, which was the one originally used (in Pocock 1918), has been modified by some taxonomists to have a double rr following rules of derivation in Ancient Greek (specifically, in a compound word the initial r- is automatically doubled after a vowel). Both spellings are in use in the scientific literature. Hypernyms suborder Hyponyms suborder Tarsiiformes infraorder, Simiiformes infraorder – infraorders References mul Primates