The nomadic Fula people have also spread their languages from Senegal across the western and central Sahel.
However, Sapir's West Atlantic and its branches turned out to be geographic and typological rather than genealogical groups.
Several classifications, including the one used by Ethnologue 20, show Fula as being more closely related to Wolof than it is to Serer, due to a copy error in the literature.
[citation needed] The Max Planck Institute for Evolutionary Anthropology classifies the Senegambian languages under the name North-Central Atlantic in its Glottolog database.
Joseph Greenberg argued that the suffixed forms arose from independent postposed determiners that agreed with the noun class: Comparison of basic vocabulary words of the Senegambian languages:[2]