This site is a shallow 10-25 cm thick layer Preceramic occupation that dates to the Talamanca phase, approximately 7000 years BP, based on conventional charcoal dates (Ranere and Cooke 1996:52). Excavated by Richard Cooke in 1976, the deposits yielded both flaked and ground stone tools and an array of charred macrobotanical remains, including nance, palms, and legumes (Dickau, Ranere and Cooke 2007). Stone tools, either wedges or choppers, from the site were found to contain maize starch grains that are thought to date between approximately 7666 and 6192 cal BP (Dickau, Ranere and Cooke 2007: Table 1).

ID Other ID Type Subtype Uncal BP (years) ± 1 σ (years) Median cal BP (years) Lower cal BP (years) Upper cal BP (years) δ13C Contaminated?
I-2018 MicroSample 6270 270 7141 7665 6553 No
I-2019 MicroSample 5880 260 6732 7411 6191 No

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References Cited

Dickau, R., A. J. Ranere and R. G. Cooke
    2007    From the Cover: Starch Grain Evidence for the Preceramic Dispersals of Maize and Root Crops into Tropical Dry and Humid Forests of Panama. Proceeding of the National Academy of Sciences USA 104(9):3651-3656.

Ranere, A. J. and R. G. Cooke
    1996    Stone Tools and Cultural Boundaries in Prehistoric Panama: An Initial Assessment. In Paths to Central American Prehistory, edited by F. W. Lange, pp. 49–77. University Press of Colorado, Niwot.