This lexical cognate data was exported from the Indo-European Lexical Database (IELex) supporting the publication: Verkerk, Annemarie. (2018). Detecting non-tree-like signal using multiple tree topologies. Journal of Historical Linguistics. If you are looking to use the IELex data in your own research, we recommend you use the latest version, which is available along with documentation, phylogenetic tree samples and example BEAST control scripts.