21 Archaea Euryarchaeota Methanomicrobia Methanosarcinales Methanosaetaceae Methanosaeta 10 Bacteria Proteobacteria Deltaproteobacteria Desulfovibrionales Desulfovibrionaceae Desulfovibrio 36 Bacteria Firmicutes Clostridia Clostridiales 6054 Bacteria Proteobacteria Gammaproteobacteria Alteromonadales Psychromonadaceae Psychromonas 1994 Bacteria Proteobacteria Deltaproteobacteria Desulfuromonadales Desulfuromonadaceae 13062 Bacteria Proteobacteria Gammaproteobacteria Oceanospirillales Oceanospirillaceae Marinobacterium 32 Bacteria Proteobacteria Deltaproteobacteria Desulfarculales Desulfarculaceae 116 Bacteria Firmicutes Clostridia Clostridiales Clostridiaceae Clostridium 172 Bacteria Proteobacteria Alphaproteobacteria Rhodospirillales Rhodospirillaceae Novispirillum 473 Bacteria Proteobacteria Epsilonproteobacteria Campylobacterales Campylobacteraceae Arcobacter 519 Bacteria Proteobacteria Epsilonproteobacteria Campylobacterales Helicobacteraceae 13 Bacteria Chloroflexi Anaerolineae Anaerolineales Anaerolinaceae T78 16 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobulbaceae Desulforhopalus 19 Bacteria Proteobacteria Deltaproteobacteria Desulfovibrionales Desulfomicrobiaceae 43 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobulbaceae 429 Bacteria Proteobacteria Alphaproteobacteria Rhodobacterales Rhodobacteraceae 15 Bacteria Chloroflexi Anaerolineae GCA004 40 Bacteria Bacteroidetes Bacteroidia Bacteroidales 18 Bacteria Spirochaetes Spirochaetes Spirochaetales Spirochaetaceae 24 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae Desulfococcus 86 Bacteria Spirochaetes Spirochaetes Spirochaetales Spirochaetaceae Spirochaeta 8 Bacteria Chlorobi Ignavibacteria Ignavibacteriales Ignavibacteriaceae 109 Bacteria Proteobacteria Deltaproteobacteria Desulfuromonadales Desulfuromonadaceae 31 Bacteria Proteobacteria Deltaproteobacteria Desulfarculales Desulfarculaceae 19 Bacteria Chloroflexi Anaerolineae envOPS12 6 Bacteria Proteobacteria Gammaproteobacteria Vibrionales Vibrionaceae Vibrio 12 Bacteria Bacteroidetes Bacteroidia Bacteroidales VC21_Bac22 48 Bacteria Proteobacteria Gammaproteobacteria Chromatiales Chromatiaceae Halochromatium 42 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobulbaceae 16 Bacteria Proteobacteria Deltaproteobacteria Myxococcales 11 Bacteria Proteobacteria Alphaproteobacteria Sphingomonadales Sphingomonadaceae Novosphingobium 113 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae Desulfococcus 4 Bacteria Firmicutes Clostridia Clostridiales 59 Bacteria Bacteroidetes Bacteroidia Bacteroidales GZKB119 11 Bacteria Caldithrix Caldithrixae Caldithrixales BA059 420 Bacteria Proteobacteria Deltaproteobacteria Desulfovibrionales Desulfovibrionaceae 8 Bacteria Proteobacteria Deltaproteobacteria Desulfarculales Desulfarculaceae 19 Bacteria Proteobacteria Deltaproteobacteria Desulfovibrionales Desulfovibrionaceae Desulfovibrio 36 Bacteria Proteobacteria Gammaproteobacteria 38 Bacteria Proteobacteria Gammaproteobacteria Thiotrichales Piscirickettsiaceae 5 Bacteria Proteobacteria Alphaproteobacteria Sphingomonadales Erythrobacteraceae Lutibacterium 20 Bacteria OP8 OP8_1 SHA 39 Bacteria Proteobacteria Gammaproteobacteria Chromatiales Chromatiaceae 14 Bacteria Bacteroidetes Bacteroidia Bacteroidales 5 Bacteria OP8 OP8_2 7 Bacteria SAR406 AB16 noFP_H7 200 Bacteria Proteobacteria Alphaproteobacteria Rhodobacterales Rhodobacteraceae 11 Bacteria Proteobacteria Alphaproteobacteria Rhodobacterales Rhodobacteraceae 10 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobulbaceae Desulfobulbus 15 Bacteria Proteobacteria Gammaproteobacteria Alteromonadales OM60 12 Archaea Crenarchaeota MCG 127 Bacteria Firmicutes Clostridia Clostridiales 27 Bacteria Proteobacteria Gammaproteobacteria Chromatiales Chromatiaceae 107 Bacteria Proteobacteria Gammaproteobacteria Thiotrichales Piscirickettsiaceae 39 Bacteria Firmicutes Bacilli Lactobacillales Carnobacteriaceae Trichococcus 29 Bacteria Bacteroidetes Bacteroidia Bacteroidales 45 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae Desulfococcus 9 Bacteria Bacteroidetes Bacteroidia Bacteroidales 22 Bacteria Proteobacteria Deltaproteobacteria Syntrophobacterales Syntrophaceae 5 Bacteria Chloroflexi Anaerolineae SHA 32 Bacteria Proteobacteria Epsilonproteobacteria Campylobacterales Helicobacteraceae 18 Bacteria Firmicutes Clostridia Clostridiales Clostridiaceae Clostridium 10 Bacteria Bacteroidetes Bacteroidia Bacteroidales 9 Bacteria Proteobacteria Deltaproteobacteria AF420338 35 Bacteria OP9 JS1 SB 20 Bacteria Proteobacteria Deltaproteobacteria Desulfuromonadales Pelobacteraceae Pelobacter 49 Bacteria Proteobacteria Alphaproteobacteria Rhodobacterales Rhodobacteraceae 19 Bacteria Spirochaetes Spirochaetes Spirochaetales Spirochaetaceae Spirochaeta 947 Bacteria Fusobacteria Fusobacteriia Fusobacteriales 322 Bacteria Firmicutes Clostridia Clostridiales Peptostreptococcaceae 17 Bacteria Tenericutes Mollicutes 23 Bacteria Fusobacteria Fusobacteriia Fusobacteriales 3 Bacteria WWE1 MSBL8 10 Bacteria Chloroflexi Anaerolineae MSB 9 Bacteria Chloroflexi Anaerolineae GCA004 18 Bacteria Firmicutes Clostridia Clostridiales Fusibacter 5 Bacteria WWE1 MSBL2 14 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae Desulfococcus 9 Bacteria Proteobacteria Deltaproteobacteria Syntrophobacterales Syntrophaceae 4 Bacteria Proteobacteria Gammaproteobacteria 10 Archaea Crenarchaeota MCG B10 27 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae 10 Bacteria Proteobacteria Deltaproteobacteria Desulfovibrionales Desulfovibrionaceae Desulfovibrio 7 Bacteria Proteobacteria Alphaproteobacteria Rhodospirillales Rhodospirillaceae Novispirillum 4 Bacteria Bacteroidetes Bacteroidia Bacteroidales 9 Bacteria Proteobacteria Gammaproteobacteria Chromatiales 12 Bacteria Proteobacteria Gammaproteobacteria Chromatiales Chromatiaceae 56 Bacteria Proteobacteria Gammaproteobacteria Alteromonadales Psychromonadaceae Psychromonas 10 Bacteria Proteobacteria Gammaproteobacteria Thiotrichales Thiotrichaceae 7 Bacteria Proteobacteria Gammaproteobacteria Chromatiales Chromatiaceae 46 Bacteria Bacteroidetes Bacteroidia Bacteroidales 16 Bacteria Proteobacteria Deltaproteobacteria Desulfarculales Desulfarculaceae 7 Bacteria Proteobacteria Gammaproteobacteria Thiotrichales Thiotrichaceae 26 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae Desulfofrigus 12 Bacteria Tenericutes Mollicutes 21 Bacteria Proteobacteria Deltaproteobacteria Desulfovibrionales Desulfovibrionaceae Desulfovibrio 8 Bacteria Proteobacteria Deltaproteobacteria Desulfarculales Desulfarculaceae 10 Bacteria Bacteroidetes Bacteroidia Bacteroidales 11 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae 12 Bacteria Proteobacteria Deltaproteobacteria Desulfobacterales Desulfobacteraceae 4 Bacteria Chloroflexi Anaerolineae OPB11 13 Bacteria Firmicutes Clostridia Clostridiales 6 Bacteria Firmicutes Clostridia Clostridiales Fusibacter 10 Bacteria Tenericutes Mollicutes Acholeplasmatales Acholeplasmataceae Acholeplasma