Table 1.

Radiocarbon dates of the Guilá Naquitz maize cobs

Provenience	14C years B.P.	Dendrocalibrated 2σ age ranges, years B.C.	Dendrocalibrated 2σ age ranges, years B.P.	Beta analytic lab number
Square D10	5410  ± 40	4340–4220	6290–6170	β132510
Square C9	5420  ± 60	4355–4065	6305–6015	β132511