Table 3. Direct AMS radiocarbon dates of earliest domesticates from fives caves in Mexico.

Species	Oaxaca	Tehuacán	Tamaulipas
C. moschata		Not present ≈5000 B.C.	800 B.C. (4) 3,400 yr younger
C. argyrosperma		115 B.C. 4,900 yr younger	3085 B.C. (4) 2,900 yr younger
P. vulgaris	147 B.C. (14)	380 B.C. (14) 4,600 yr younger	A.D. 730 (14) 3,400 yr younger
Z. mays	4280 B.C. (10)	3540 B.C. (7) 600 yr younger	2455 B.C. (4) 400 yr older
L. siceraria	7970 B.C. (16) no change	5250 B.C. 1,300 yr younger	4490 B.C. (4) 500 yr younger
C. pepo	8025 B.C. (15) no change	5960 B.C. 5,000 yr older	4360 B.C. (4) 2,800 yr older

Results are presented as dendrocalibrated calendar time scale intercept in years B.C. (ref. no.), followed by change in age from initial estimate.