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. 2021 Jan 7;4:38. doi: 10.1038/s42003-020-01561-5

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Rate values were output by a variable rate phylogenetic model implemented using BayesTraits. The taxa included in each 1-million-year interval are denoted using a phylogenetic tree, dated using using first and last appearance dates. The taxa sampled in each 1-million-year interval were bootstrapped. Each bootstrap corresponded to a random 50% sample of the data in each bin, repeated 100 times. The interquartile range is shown in dark grey, the total range in light grey.