Table 1.

Starch recovered from tools and associated dates

Site cat. no.	Tool type	Unit	Level	Assoc. date (14C yrs BP)	Calibrated date before present	Poaceae	Z. mays	Fabaceae	Zamia cf. skinneri	Dioscorea sp.	Dioscorea cf. urophylla	Maranta arundinacea	Calathea sp.	Manihot esculenta	Unidentified	Total
Ladrones			3	4800 ± 100	5736–5314
CL-68/1	Handstone	0	10	≈6600	≈7500	(4)	4(3)			1					7	19
CL-68/2	Base	0	10	≈6600	≈7500		4								2	6
CL-82b	Handstone	01	11	6860 ± 90	7928–7671	(3)	10(5)								10	28
Casita de Piedra			B1	2890 ± 70	3352–2852
69/2	EGC	4	B3	≈3300	≈3600		(2)	(1)		1			2		191	197
69/18	Base	4	B3	≈3300	≈3600	1(2)	(3)							1	37	44
64/18	Base	3	C2	≈3800	≈4200	3(2)	18	1		2					22	48
76/2	Chopper	5	C2	≈3800	≈4200	2(1)	4(1)		(1)						17	26
			C3	4075 ± 105	4847–4296
			D3	4085 ± 75	4823–4430
52/44	Chopper	2	E2	≈5000	≈5600	(1)								4	7	12
87/33	EGC	4	E2	≈5000	≈5600	(4)		(1)	(1)	(1)					14	21
			E4	5795 ± 105	6881–6325
101/15	Flake knife	5	F3	6560 ± 120	7661–7261							1			1	2
Trapiche			B1	2300 ± 75	2696–2119
147/10	Chopper	4	C1	3870 ± 75	4518–4086	1(2)	9(2)			16	2				25	57
132/16	EGC	3	D1	≈4000	≈4800	4(1)						2(2)			6	15
153/1	Chopper	5	D2	≈4300	≈4900	4(4)	9								15	32
			E2	4685 ± 85	5602–5071
			E3	5850 ± 110	6933–6411
Hornito
C24	Chopper	C		6270 ± 270 to 5880 ± 260	7666–6554 to 7412–6192	(2)	9								9	20
77-1	Wedge	A		6270 ± 270 to 5880 ± 260	7666–6554 to 7412–6192	(1)	6(3)								11	21
E18	Scraper	E		6270 ± 270 to 5880 ± 260	7666–6554 to 7412–6192				2(2)						3	7

Radiocarbon calibrations made using the OxCal 4.0 program (1). EGC, edge-ground cobble. Numerals represent the number of granules identified from each taxon on a tool. Numerals in parentheses represent tentative identifications. A more complete version of this table appears as SI Table 2.