Columbia subject headings:
Biogeography--Latin America.
Geology, Stratigraphic--Quaternary.
Geology--Latin America.
Paleobiogeography--Latin America.
Paleoecology--Latin America.
Harvard subject headings:
Biogeography--Latin America.
Geology, Stratigraphic--Quaternary
Geology--Latin America.
Paleobiogeography--Latin America.
Paleoecology--Latin America.
Princeton subject headings: