thermolithobacteria thermolithobacteria thermolithobacteria is a class of rod-shaped gram-positive bacteria within phylum bacillota. species within this class are thermophilic lithotrophs isolated from sediment in calcite springs in yellowstone national park. thermolithobacter ferrireducens strain jw/ka-2(t) metabolism consists of the oxidation of hydrogen gas and reduction of ferric oxide to magnetite. thermolithobacter carboxydivorans strain r1(t) is hydrogenic and oxidizes carbon monoxide. thermolithobacteria scientific classification domain: bacteria phylum: bacillota class: thermolithobacteria sokolova et al. 2007 order: thermolithobacterales sokolova et al. 2007 family: thermolithobacteraceae sokolova et al. 2007 genus and species thermolithobacter sokolova et al. 2007 thermolithobacter carboxydivorans thermolithobacter ferrireducens