carboxydothermus carboxydothermus carboxydothermus is a genus of thermophilic, anaerobic bacteria from the family of thermoanaerobacteraceae. carboxydothermus scientific classification domain: bacteria phylum: bacillota class: clostridia order: thermoanaerobacterales family: thermoanaerobacteraceae genus: carboxydothermussvetlichny et al. 1991 type species carboxydothermus hydrogenoformanssvetlichny et al. 1991 species c. ferrireducens c. hydrogenoformans c. islandicus c. pertinax c. siderophilus synonyms thermoterrabacterium slobodkin et al. 1997 phylogeny the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi). 16s rrna based ltp_01_2022 120 marker proteins based gtdb 07-rs207 c. pertinax yoneda et al. 2012 c. siderophilus slepova et al. 2009 c. hydrogenoformans svetlichny et al. 1991 c. ferrireducens (slobodkin et al. 1997) slobodkin et al. 2006 c. islandicus novikov et al. 2011 c. pertinax c. islandicus c. hydrogenoformans