Fig. 4

Divergence times of the six lineages of T. elegans. Clades correspond to Fig. 2. Number of nodes are average values and bars in yellow are the 95 % HPD. A time scale show the geological ages. Gray shaded areas represent the GPG (~1.68-1.016 Mya) and the CPG (~0.7-0.6 Mya). Below the tree glacial-interglacial cycles were reconstructed using the data available from [82] and the historical ocean temperature available from [84]