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. 2022 Jul 15;119(29):e2121036119. doi: 10.1073/pnas.2121036119

Fig. 1.

Fig. 1.

A hypothetical evolutionary history with shared divergences (Left) and the benefits of the generalizing tree space under such conditions (Right). Current methods are restricted to one class of tree models, where the tree is fully bifurcating and independent divergence-time parameters are estimated for all internal nodes (Center). Figure was made by using Gram [v4.0.0 (35)] and the P4 phylogenetic toolkit [v1.4 5742542 (36)]. Image credit for top and bottom lizard silhouettes: Phylopic/Steven Traver. Image credit for middle lizard silhouettes: Pixabay/No-longer-here.