Morris Swadesh further consolidated on Sapir's North American classification and expanded it to group all indigenous languages of the Americas in just 6 families, 5 of which were entirely based in the Americas [REF].
Macro-Mayan comprising Mayan along with Sapir's Penutian and Aztec-Tanoan families, the Otomanguean languages and various languages of Central and South America including the Chibchan languages, the Paezan languages and the Tucanoan languages.