Casita de Piedra

Information

This rockshelter site is located less than 1 km upstream from Trapiche rockshelter on the west side of the Rio Chiriqui. Anthony Ranere excavated the site in 1971, discovering preceramic period occupations in the approximately 1.4 m of deposits (Ranere 1980:26). Two artifacts, a base and a chopper, were found in preceramic level C2 and yielded maize starch grains (Dickau et al. 2007:3651). This level of the preceramic deposits overlays level C3 which has one radiocarbon date on associated charcoal (I-5614--see sample page). Tools from stratigraphically earlier layers (with radiocarbon dates) did not yield any maize starch grains (Dickau et al. 2007:Table 1). Maize starch grains were, however, found on tools in the more recent layer B3, but there is no radiocarbon date associated with this level. Dickau et al. (2007: Table 1) estimate that it may be approximately 3600 cal BP.

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-5614 MicroSample starch grain 4075 105 4593 4846 4295 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.
    1980    Preceramic Shelters in the Talamancan Range. In Adaptive Radiations in Prehistoric Panama, edited by O. F. Linares and A. J. Ranere, pp. 16–43. Peabody Museum Monographs, Vol. 5. Harvard University Press, Cambridge.