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Diagrammatic phylogeny constructed to show organisms from this study compared to other key sequences. (A) Phylogenetic tree of the Thermus-Deinococcus group with sequences from this study represented by Glenwood Springs speleothem tip (GSST), speleothem base (GSSB), ceiling mat (GSCM), and cave raft (GSCR). (B) Phylogenetic tree of the green non-sulfur/Chloroflexus phyla of Bacteria. (C) Phylogenetic tree of the Crenarchaeota as they relate to this study.
