The rhinarium is that wet naked surface around the nostrils of the nose in most mammals. Colloquially it might be called a "wet snout". A nostril is one of the two channels of the nose, from the point where they bifurcate to the external opening. ... Jump to: navigation, search VEASE FELIX RODRIGUEZ Image:Timnose. ...

Primates are phylogenetically divided into Strepsirrhini ("lower primates" with rhinariums) and Haplorrhini ("higher primates" without rhinariums). Jump to: navigation, search Families 13, See classification A primate is any member of the biological order Primates, the group that contains all lemurs, monkeys, apes, and humans. ... Families Cheirogaleidae Lemuridae Megaladapidae Indridae Daubentoniidae (Aye-aye) Loridae Galagonidae The Strepsirrhini clade is one of the two suborders of primates. ... Families Tarsiidae Cebidae Aotidae Pitheciidae Atelidae Cercopithecidae Hylobatidae Hominidae The haplorrhines, the dry-nosed primates, are members of the Haplorrhini clade: the prosimian tarsiers and all of the true simians (the monkeys and the apes, including humans). ...

The presence of a rhinarium is associated with general features of the skull, especially the lateral placement of the eyes, and its absence with front-facing eyes. Mammals with rhinariums have a stronger sense of olfaction. Olfaction, the sense of odor (smell), is the detection of chemicals dissolved in air (or, by animals that breathe water, in water). ...