ReadMe of Blank2011.AnExpansionOfAgeConstr.msq This file was created in Mesquite (mesquiteproject.org) in October 2011. Prepared for Submission to DataDryad.org using Mesquite version 2.75, September 2013. Published as Figures 3 and 7 in the article: An Expansion of Age Constraints for Microbial Clades that Lack a Conventional Fossil Record Using Phylogenomic Data Carrine E. Blank J Mol Evol (2011) 73:188-208 doi:10.1007/s00239-011-9467-y Character Matrix 1: Nucleotide Sequence Matrix Character Matrix 2: Categorical Matrix Chitinase (binary characters) Catechol dioxygenase (binary characters) Tree Window: Phylogenetic tree topology was reconstructed using a 100-gene concatenated dataset. Branchlengths were first inferred using maximum likelihood, then scaled to age using penalized likelihood (using r8s). The scale bar shows the median node age in millions of years before present.