Ogooué River
The "Miopithcus" genus was considered monotypic until 1969, when Machado suggested there was a northern and southern species separated by the Congo River. The southern species was described as "M. talapoin" and the northern species was left undescribed. It was not until 1997 that Jonathan Kingdon gave it the scientific name "Miopithecus ogouensis", based on the Ogooué River in Gabon. Kingdon pointed out that the presently used binomial, where the specific name is a reference to the Ogooué River, is a "nomen nudum":