Ferdon (1955) reports that other artifacts, which all consist of stone, are also simple. Stone choppers and scrapers are crude percussion flaked specimens, while their grinding stones reveal little or no shaping before use.Ferdon 1955 The heavy reliance in stone tools on naturally-shaped cobbles is a trait clearly surviving from the earlier and preceramic Cerro Mangote culture as reported on by McGimsey in 1956. Given the presence of shell, it is surprising that there is a total absence of shell artifacts.
