Maximum likelihood phylogenetic tree of the 16S rRNA gene sequences.

<p>GenBank numbers are given in brackets. <i>Halolamina</i> species are marked with a pink background, and species of <i>Halobacterium</i> with light blue one. Strains isolated from the 800 m rock salt sample are bolded, and partial sequences marked with an asterisk (*). Bar represents inferred substitutions per nucleotide position. <i>Methanospirillum hungatei</i> is used as an outgroup.