Supplementary material:
Table S3. Summary statistics of plastid and nuclear alignments employed to conduct Maximum Likelihood, NeighborNet and Bayesian Multispecies coalescence analyses.
Table S4. Summary statistics of D-statistic tests conducted on modern individuals of date palms, their known closely related species and the ancient Saqqara date palm leaf using as a reference a highly fragmented genome reference (GCA_000413155.1).
Table S5. Summary statistics of ABBA/BABA introgression tests conducted on modern individuals of date palms, their known closely related species and the ancient Saqqara date palm leaf using as a reference a contiguous genome reference (GCA_009389715.1).
Table S8. Summary statistics of absolute age estimation analyses conducted on nuclear and plastid scaffolds. PP denotes posterior probabilities.