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. 2019 Apr 1;11(4):1258–1274. doi: 10.1093/gbe/evz073

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© The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — —Phylogeny reconstruction and time divergence estimation of lycophytes with plastome rearrangement events mapped on the branches. Node A–B represent the calibration nodes. Node A: fossil calibration of the root age corresponding to the split of Lycopodiopsida and Isoetopsida (392–451 Ma); node B: fossil node separating Selaginellaceae and its sister family Isoetaceae (372–392 Ma). Black star represents the occurrence time of plastomes with DR structure, gray star represents the occurrence time of plastomes with IR/DR-coexisting structure and hollow gray star represents the occurrence time of plastomes with IR structure.