Fig. 1: Seventy-two ancient wolf genomes.
From: Grey wolf genomic history reveals a dual ancestry of dogs
a, Sampling locations of ancient wolves and one ancient dhole analysed here, on a base map from Natural Earth (naturalearthdata.com). b, Ages and sequencing coverage of ancient wolves. c, PC1 from a PCA on outgroup f3-statistics plotted against sample age. PCs were calculated from ancient wolves only, with present-day wolves and dogs projected onto the plot. d, Heterozygosity estimates from sampling of two reads at sites ascertained as heterozygous in a coyote. Bars denote 95% CIs from block jackknifing.
