Kennett, Douglas J.; Piperno, Dolores R.; Jones, John G.; Neff, Hector; Voorhies, Barbara; Walsh, Megan K.; Culleton, Brendan J.
(2010)
Large island-like shell mounds along the southern coast of Mexico are the earliest known archaeological sites on the Pacific margin of Mesoamerica. These aceramic deposits date to between 7,500 to 3,800 cal BP and have ...