Micro sample 494


Starch granules (n=17) were recovered from a grinding stone tool (FS1051, Sample SS292). The date was taken from associated charcoal recovered from the same layer and context as the stone tool (Zarrillo et al. 2008).

Radiocarbon Date

Attached Files

Maize starch granule recovered from a grinding stone tool (FS1051, SS-292). This grain shows "enlarged fissures radiating from the hilum, indicating that maize was processed by milling." (Zarrillo et al. 2008: 5008; Fig. 2) (Scale bar = 20 μm.)

References Cited

Zarrillo, S., D. M. Pearsall, J. S. Raymond, M. A. Tisdale and D. J. Quon
    2008    Directly dated starch residues document early formative maize (Zea mays L.) in tropical Ecuador. Proceedings of the National Academy of Sciences, USA 105(13):5006–5011.


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