Table 3.

Descriptive statistics of comparative archaeological and modern isotope data

	Collagen					Carbonate
	n	δ13C (mean)	SD	δ15N (mean)	SD	n	δ13C (mean)	SD
Archaeological
Pyramid-Complete1	28	−13.3	2.9	8.3	1.5	29	−6.2	2.5
Pyramid-Incomplete1	18	−15.8	2.7	7.3	1.1	43	−12.0	4.1
Teopancazco-Dog2	2	−7.6	0.1	10.0	1.2	2	−1.3	0.8
Teopancazco-Turkey2	2	−11.0	2.8	5.9	0.8	2	−2.9	0.9
Modern
Spider monkey3*	5	−22.0	0.2	5.9	0.5	—	—	—
Howler monkey3*	12	−20.5	0.2	4.4	0.7	—	—	—
Capuchin monkey3*	4	−21.7	0.2	7.9	0.1	—	—	—
Muriqui or woolly-spider monkey3*	7	−20.6	0.2	6.5	0.4	—	—	—

^*Data reported postcorrections for Suess effect and hair-bone offset following O’Connell et al. (101). Sources: ¹Sugiyama et al. (47), ²Morales Puente et al. (56), ³Schoeninger et al. (57).