Supporting Dataset S2. Files used to infer the 16S rDNA phylogeny aimed at inferring the phylogenetic position of Clade X (shown in Supporting Figure S1). Contains alignment before and after masking,
*Lineage data were obtained from the NCBI Taxonomy Browser at http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi. Information on the lineage for the each of the organisms examined in this study i