Fig. 3

Species tree inference using Hydrophis single-copy orthologs and whole-genome sequences. A Time tree of sampled taxa drawn with Archaeopteryx 0.968 beta BG using relationships and divergence times from Lee et al. [11] and Zaher et al. [27]. B Species tree inferred from Hydrophis-specific single-copy orthologs using IQ-TREE and ASTRAL-III. Node labels are in the form ML support/gene concordance factor. C PhyloNet maximum likelihood network illustrating potential ILS/Introgression signals (orange arcs) between the six Hydrophis snakes. D A SANS serif weakly compatible splits network between the six Hydrophis snakes generated from the genome assemblies. Splits between snakes are represented by the red parallel edges