Catarrhinia subcategory of the primate infraorder Simiiformes that includes any primate considered an Old World monkey, an ape, or in the lineage of humans. This classification features downward-facing nostrils and a 2.1.2.3 dental formula.Elon.io is an online learning platformWe have an entire course teaching Anthropology grammar and vocabulary.Start learning Anthropology nowYour questions are stored by us to improve Elon.ioYou've reached your AI usage limitSign up to increase your limit.