Table 1. Isotopic data of the samples from the Cave of Santimamiñe analysed in this study, the cultural period to which they presumably belong and their corresponding mtDNA haplotypes and haplogroups.

	Stable isotopes		14C Dating		Haplotypea
Sampleb	δ13C (‰)	δ15N (‰)	2σ Calibration	Period	HVS-I (16 159–16 406)	HVS-II (12-408)	Haplogroup
S.15I	−16.1	10.6	240–390 cal CE	Late Roman	rCRS	214G, 263G, 315.1C	H
S.16G	−19.4	8.9	1450–1380 cal BCE, 1340–1320 cal BCE	Bronze Age	16343G, 16390A	73G, 150T, 263G, 309.1C, 315.1C	U3a
S.I.147	−19.9	8.8	1600–1570 cal BCE, 1560–1550 cal BCE, 1540–1440 cal BCE	Bronze Age	16299G, 16311C	263G, 309.1C, 309.2C, 315.1C	R0
S.7J	−19.4	8.6	1740–1610 cal BCE	Bronze Age	16192T, 16270T	73G, 146C, 150T, 263G, 309.1C, 315.1C	U5b
S.11N	−19.8	9.2	1740–1610 cal BCE	Bronze Age	rCRS	263G, 309.1C, 315.1C	H1
S.17G	−18.8	10.4	2200–2010 cal BCE, 2000–1980 cal BCE	Chalcolithic	16185T, 16294T, 16296T, 16304C, 16311C, 16366T	Not analysed	T2b
S.12N	−16.3	10.4	5210–4950 cal BCE	Mesolithic	(16114A)c, 16192T, 16256T, 16270T, 16294T	54A, 73G, 263G, 309.1C, 315.1C	U5a2a

Abbreviations: BCE, years before Common Era; mtDNA, mitochondrial DNA; rCRS, revised Cambridge Reference Sequence.

^aThe polymorphisms showed are changes referred to rCRS.²¹

^bSample names noted in this table, as well as those used in all the text, are the shortened names used in our laboratory. In Supplementary Table S1 the relation between each laboratory sample name and its archaeological label is shown.

^cThe polymorphism in brackets was revealed through the authentication analyses performed in the laboratory of Strasbourg (France), since it is out of the region analysed in our laboratory.