Strontium isotope ratio (⁸⁷Sr/⁸⁶Sr) of archaeological and modern samples.

<p>(A) For both the Messak (dotted line) and Murzuq (dashed line) the local range is defined by 2 sd of the enamel mean values of the ancient animal samples. Intra-individual Sr signatures are measured at the two furthermost oxygen values. Messak sample codes: 24 = 07/39 C3; 26a = 07/39 C2 ext.; 10 = 07/79 C1; 30(A) = 07/40 C1(A); 30(B) = 07/40 C1(B); 9 = 07/28 C1; 41 = 07/55 C1; 39 = 07/110 C1; 7 = 09/69 C1; 38 = 00/556. (B) Range of strontium isotope ratio (⁸⁷Sr/⁸⁶Sr) for the Messak and Murzuq animals. Abbreviations: MK = Messak; MQ = Murzuq; UK = Uan Kasa.