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? |
---|---|---|---|---|---|---|---|---|---|---|
458 | I-2018 | MicroSample | 6270 | 270 | 7141 | 7665 | 6553 | No | ||
459 | I-2019 | MicroSample | 5880 | 260 | 6732 | 7411 | 6191 | No |