Data and code availability
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Codes necessary for the hymenocarine phylogenetic analysis (Data Files 1 and 2, related to Figure 4) and euarthropod analysis (Data Files 3 and 4, related to Figure S4), and data for the segmentation analysis (Data File 5, related to Figures S5 and S6) are available for download as Data S1.
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Code necessary for the morphospace (related to Figure 4) and segmentation analysis (related to Figures S5 and S6) are included as Data File 6 in Data S1.
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Supplementary figures and character list are available for download as Document S1.