| argentina | jujuy province | uncultured methanobrevibacter sp. | species | 1 | 0 |
| argentina | jujuy province | uncultured methanothermobacter sp. | species | 2 | 0 |
| australia | | methanobacterium bryantii | species | 1 | 0 |
| australia | | methanobacterium sp. a39 | species | 142 | 0 |
| australia | | methanobrevibacter sp. a27 | species | 118 | 0 |
| australia | | methanobrevibacter sp. a54 | species | 226 | 0 |
| australia | | methanobrevibacter sp. ye286 | species | 1 | 0 |
| australia | | methanobrevibacter sp. ye287 | species | 1 | 0 |
| australia | | methanobrevibacter sp. ye288 | species | 1 | 0 |
| australia | | methanobrevibacter sp. ye300 | species | 1 | 0 |
| australia | | methanobrevibacter sp. ye301 | species | 1 | 0 |
| australia | | methanobrevibacter sp. ye302 | species | 1 | 0 |
| australia | | methanobrevibacter sp. ye303 | species | 1 | 0 |
| australia | | methanobrevibacter sp. ye304 | species | 1 | 0 |
| australia | | methanosphaera sp. a6 | species | 336 | 0 |
| australia | new south wales | methanobrevibacter smithii | species | 1 | 0 |
| australia | queensland | methanobacteriaceae archaeon uba588 | species | 1 | 0 |
| australia | queensland | methanobrevibacter | genus | 0 | 1 |
| australia | queensland | methanobrevibacter smithii | species | 0 | 1 |
| australia | victoria | methanosphaera stadtmanae | species | 262 | 0 |
| australia | western australia | methanobrevibacter | genus | 0 | 1 |
| australia | western australia | methanosphaera sp. wgk6 | species | 76 | 0 |
| australia | western australia | uncultured methanobrevibacter sp. | species | 38 | 0 |
| austria | | methanobrevibacter sp. | species | 1 | 0 |
| brazil | | uncultured methanobacteriaceae archaeon | species | 1 | 0 |
| brazil | | uncultured methanobacterium sp. | species | 2 | 0 |
| brazil | | uncultured methanobrevibacter sp. | species | 23 | 0 |
| brazil | | uncultured methanosphaera sp. | species | 6 | 0 |
| brazil | | uncultured methanothermobacter sp. | species | 2 | 0 |
| brazil | rio de janeiro | methanobrevibacter smithii | species | 0 | 1 |
| cameroon | | uncultured methanobrevibacter sp. | species | 12 | 0 |
| canada | alberta | methanobacteriaceae archaeon uba349 | species | 1 | 0 |
| canada | alberta | methanobacterium | genus | 0 | 1 |
| canada | alberta | methanobacterium subterraneum | species | 1 | 0 |
| canada | alberta | methanobrevibacter ruminantium | species | 1 | 0 |
| canada | ontario | methanobrevibacter | genus | 0 | 1 |
| canada | ontario | methanobrevibacter ruminantium | species | 0 | 1 |
| canada | prince edward island | methanobrevibacter | genus | 0 | 1 |
| canada | prince edward island | methanobrevibacter ruminantium | species | 0 | 1 |
| china | | methanobacteriaceae archaeon enrichment clone m13 | species | 1 | 0 |
| china | | methanobacteriaceae archaeon enrichment culture clone b13-a-62 | species | 1 | 0 |
| china | | methanobacteriaceae archaeon enrichment culture clone b1-a-36 | species | 1 | 0 |
| china | | methanobacterium beijingense | species | 3 | 0 |
| china | | methanobacterium curvum | species | 1 | 0 |
| china | | methanobacterium flexile | species | 3 | 0 |
| china | | methanobacterium formicicum | species | 1 | 0 |
| china | | methanobacterium movens | species | 2 | 0 |
| china | | methanobacterium sp. c5/51 | species | 1 | 0 |
| china | | methanobacterium veterum | species | 1 | 0 |
| china | | methanobrevibacter millerae | species | 2 | 0 |
| china | | methanobrevibacter ruminantium | species | 19 | 0 |
| china | | methanobrevibacter ruminantium m1 | no rank | 1 | 0 |
| china | | methanothermobacter marburgensis | species | 2 | 0 |
| china | | methanothermobacter sp. enrichment clone m2 | species | 1 | 0 |
| china | | methanothermobacter sp. enrichment clone sa11 | species | 1 | 0 |
| china | | methanothermobacter sp. enrichment clone sa2 | species | 1 | 0 |
| china | | methanothermobacter sp. enrichment culture | species | 26 | 0 |
| china | | methanothermobacter sp. enrichment culture clone b11-a-16 | species | 1 | 0 |
| china | | methanothermobacter sp. enrichment culture clone b13-a-210 | species | 1 | 0 |
| china | | uncultured methanobacteriaceae archaeon | species | 19 | 0 |
| china | | uncultured methanobacterium sp. | species | 89 | 0 |
| china | | uncultured methanobrevibacter sp. | species | 64 | 0 |
| china | | uncultured methanothermobacter sp. | species | 500 | 0 |
| china | beijing | methanobacterium | genus | 0 | 1 |
| china | beijing | methanobacterium beijingense | species | 0 | 1 |
| china | guangdong | uncultured methanobacterium sp. | species | 2 | 0 |
| china | hebei | methanobacterium | genus | 0 | 1 |
| china | hebei | methanobacterium formicicum | species | 0 | 1 |
| china | henan | uncultured methanothermobacter sp. | species | 1 | 0 |
| china | hubei | uncultured methanobacteriaceae archaeon | species | 1 | 0 |
| china | hunan | methanobacterium sp. uba384 | species | 1 | 0 |
| china | hunan | methanobacterium sp. uba385 | species | 1 | 0 |
| china | hunan | methanobacterium sp. uba388 | species | 1 | 0 |
| china | hunan | methanobacterium sp. uba405 | species | 1 | 0 |
| china | hunan | methanobrevibacter sp. uba395 | species | 1 | 0 |
| china | hunan | methanobrevibacter sp. uba403 | species | 1 | 0 |
| china | hunan | uncultured methanobacterium sp. | species | 5 | 0 |
| china | hunan | uncultured methanobrevibacter sp. | species | 4 | 0 |
| china | jiangsu | methanobacterium beijingense | species | 1 | 0 |
| china | jiangsu | methanobacterium formicicum | species | 1 | 0 |
| china | qinghai | methanobacterium | genus | 0 | 1 |
| china | qinghai | methanobrevibacter millerae | species | 0 | 1 |
| china | qinghai | methanobrevibacter ruminantium | species | 0 | 1 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_11 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_15 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_21 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_25 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_3 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_30 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_31 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_33 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_34 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_37 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_38 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_42 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_43 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_6 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_8 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone ask_9 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone l55a_12 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone l55a_24 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone l55a_25 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone l55a_26 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone l55a_35 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone l55a_37 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_1 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_2 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_3 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_4 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_5 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_6 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_7 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mty2_8 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mtyc_1 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mtyc_2 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mtyc_4 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mtyc_6 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mtyc_8 | species | 1 | 0 |
| china | shandong | methanothermobacter sp. enrichment culture clone mtyc_9 | species | 1 | 0 |
| china | shanghai shi | methanobacteriaceae archaeon enrichment culture | species | 2 | 0 |
| china | shanxi | methanobacterium | genus | 0 | 1 |
| china | shanxi | methanobrevibacter | genus | 0 | 1 |
| china | shanxi | methanosphaera | genus | 0 | 1 |
| china | sichuan | methanobacterium beijingense | species | 1 | 0 |
| china | sichuan | methanobacterium formicicum | species | 1 | 0 |
| china | sichuan | methanobacterium sp. uba410 | species | 1 | 0 |
| china | sichuan | methanobacterium sp. uba418 | species | 1 | 0 |
| china | sichuan | methanobacterium sp. uba419 | species | 1 | 0 |
| china | sichuan | methanobacterium sp. uba428 | species | 1 | 0 |
| china | sichuan | methanobrevibacter sp. uba412 | species | 1 | 0 |
| china | sichuan | methanobrevibacter sp. uba417 | species | 1 | 0 |
| china | tianjin shi | methanobacterium sp. cm1 | species | 1 | 0 |
| china | tianjin shi | methanothermobacter thermautotrophicus | species | 1 | 0 |
| china | tibet | methanobrevibacter ruminantium | species | 1 | 0 |
| china | tibet | methanobrevibacter smithii | species | 1 | 0 |
| china | tibet | methanobrevibacter sp. | species | 3 | 0 |
| china | xinjiang | methanobrevibacter | genus | 0 | 1 |
| china | yunnan | methanobacterium sp. 8-1 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba290 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba294 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba295 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba297 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba302 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba305 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba310 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba311 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba316 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba322 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba324 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba327 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba330 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba336 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba339 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba341 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba351 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba353 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba355 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba357 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba368 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba373 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba375 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba379 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba380 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba397 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba42 | species | 1 | 0 |
| china | yunnan | methanobacterium sp. uba44 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba313 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba318 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba325 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba337 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba352 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba365 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba401 | species | 1 | 0 |
| china | yunnan | methanobrevibacter sp. uba46 | species | 1 | 0 |
| china | yunnan | methanothermobacter sp. | species | 1 | 0 |
| colombia | | uncultured methanobacterium sp. | species | 1 | 0 |
| colombia | | uncultured methanothermobacter sp. | species | 1 | 0 |
| costa rica | | methanobacterium sp. | species | 1 | 0 |
| costa rica | | uncultured methanobacterium sp. | species | 1 | 0 |
| czech republic | | uncultured methanobacteriaceae archaeon | species | 1 | 0 |
| czech republic | | uncultured methanobacterium sp. | species | 2 | 0 |
| czech republic | | uncultured methanobrevibacter sp. | species | 2 | 0 |
| egypt | | uncultured methanothermobacter sp. | species | 4 | 0 |
| france | | methanobacterium sp. enrichment culture clone a1er16 | species | 1 | 0 |
| france | | methanobacterium sp. enrichment culture clone e4er19 | species | 1 | 0 |
| france | | methanobrevibacter sp. 87.7 | species | 602 | 0 |
| france | | uncultured methanobacteriaceae archaeon | species | 1 | 0 |
| france | | uncultured methanobrevibacter sp. | species | 2 | 0 |
| france | provence-alpes-cote d'azur region | uncultured methanobrevibacter sp. | species | 4 | 0 |
| germany | | methanobacterium aggregans | species | 3 | 0 |
| germany | | methanobacterium beijingense | species | 1 | 0 |
| germany | | methanobacterium formicicum | species | 9 | 0 |
| germany | | methanobacterium sp. mb1 | species | 1 | 0 |
| germany | | methanobacterium sp. mb10 | species | 1 | 0 |
| germany | | methanobacterium sp. mb2 | species | 1 | 0 |
| germany | | methanobacterium sp. mb3 | species | 1 | 0 |
| germany | | methanobacterium sp. mb4 | species | 1 | 0 |
| germany | | methanobacterium sp. mb5 | species | 1 | 0 |
| germany | | methanobacterium sp. mb6 | species | 1 | 0 |
| germany | | methanobacterium sp. mb7 | species | 1 | 0 |
| germany | | methanobacterium sp. mb8 | species | 1 | 0 |
| germany | | methanobacterium sp. mb9 | species | 1 | 0 |
| germany | | methanobrevibacter sp. | species | 2 | 0 |
| germany | | methanothermobacter marburgensis | species | 1 | 0 |
| germany | | methanothermobacter thermautotrophicus | species | 2 | 0 |
| germany | | uncultured methanobacteriaceae archaeon | species | 4 | 0 |
| germany | | uncultured methanobacterium sp. | species | 1 | 0 |
| germany | | uncultured methanobrevibacter sp. | species | 4 | 0 |
| germany | | uncultured methanothermobacter sp. | species | 1 | 0 |
| germany | bavaria | uncultured methanobacteriaceae archaeon | species | 20 | 0 |
| germany | hesse | uncultured methanobacterium sp. | species | 2 | 0 |
| germany | hesse | uncultured methanothermobacter sp. | species | 6 | 0 |
| germany | lower saxony | methanobrevibacter sp. | species | 2 | 0 |
| germany | rhineland-palatinate | methanobacterium formicicum | species | 0 | 1 |
| germany | saarland | methanobacterium formicicum | species | 0 | 1 |
| germany | saxony-anhalt | uncultured methanobrevibacter sp. | species | 1 | 0 |
| greece | central macedonia region | uncultured methanobacterium sp. | species | 1 | 0 |
| hungary | | uncultured methanobrevibacter sp. | species | 2 | 0 |
| india | | methanobacteriaceae archaeon tmk175 | species | 2 | 0 |
| india | | methanobacterium bryantii | species | 9 | 0 |
| india | | methanobacterium formicicum | species | 6 | 0 |
| india | | methanobacterium sp. as1 | species | 1 | 0 |
| india | | methanobacterium sp. grau-8 | species | 1 | 0 |
| india | | methanobacterium subterraneum | species | 11 | 0 |
| india | | methanobrevibacter olleyae | species | 6 | 0 |
| india | | methanobrevibacter smithii | species | 1 | 0 |
| india | | methanobrevibacter sp. | species | 2 | 0 |
| india | | methanobrevibacter sp. cirg-gmbb01 | species | 1 | 0 |
| india | | methanobrevibacter sp. cirg-gmbb02 | species | 1 | 0 |
| india | | methanothermobacter marburgensis | species | 13 | 0 |
| india | | methanothermobacter sp. enrichment culture clone cibanicra-mbt1 | species | 1 | 0 |
| india | | methanothermobacter thermautotrophicus | species | 28 | 0 |
| india | | methanothermobacter thermophilus | species | 1 | 0 |
| india | | methanothermobacter wolfeii | species | 1 | 0 |
| india | | uncultured methanobacteriaceae archaeon | species | 6 | 0 |
| india | | uncultured methanobacterium sp. | species | 91 | 0 |
| india | | uncultured methanobrevibacter sp. | species | 33 | 0 |
| india | | uncultured methanothermobacter sp. | species | 35 | 0 |
| india | gujarat | methanothermobacter tenebrarum | species | 42 | 0 |
| india | jharkhand | uncultured methanothermobacter sp. | species | 5 | 0 |
| indonesia | | uncultured methanobrevibacter sp. | species | 1 | 0 |
| indonesia | | uncultured methanosphaera sp. | species | 1 | 0 |
| iran | alborz province | methanobrevibacter sp. | species | 3 | 0 |
| ireland | | methanobrevibacter smithii | species | 99 | 0 |
| italy | | methanosphaera cuniculi | species | 60 | 0 |
| italy | | uncultured methanobacteriaceae archaeon | species | 1 | 0 |
| italy | | uncultured methanobrevibacter sp. | species | 15 | 0 |
| italy | lazio region | methanobacterium formicicum | species | 1 | 0 |
| italy | lazio region | methanobrevibacter arboriphilus | species | 1 | 0 |
| japan | | methanobacterium ferruginis | species | 2 | 0 |
| japan | | methanobacterium kanagiense | species | 2 | 0 |
| japan | | methanobacterium petrolearium | species | 2 | 0 |
| japan | | methanobacterium sp. | species | 1 | 0 |
| japan | | methanothermobacter sp. mt-2 | species | 1 | 0 |
| japan | | methanothermobacter tenebrarum | species | 3 | 0 |
| japan | | uncultured methanobacterium sp. | species | 30 | 0 |
| japan | | uncultured methanobrevibacter sp. | species | 17 | 0 |
| japan | aichi prefecture | methanobacterium sp. ah1 | species | 2 | 0 |
| japan | aichi prefecture | methanobacterium sp. f | species | 1 | 0 |
| japan | fukuoka prefecture | methanobrevibacter arboriphilus | species | 2 | 0 |
| japan | hokkaido prefecture | methanobacterium sp. hd-1 | species | 2 | 0 |
| japan | hokkaido prefecture | methanobacterium sp. m03 | species | 1 | 0 |
| japan | hokkaido prefecture | methanobacterium sp. t01 | species | 2 | 0 |
| japan | hokkaido prefecture | methanobacterium sp. t11 | species | 1 | 0 |
| japan | hokkaido prefecture | uncultured methanobacteriaceae archaeon | species | 9 | 0 |
| japan | hokkaido prefecture | uncultured methanobacterium sp. | species | 4 | 0 |
| japan | hokkaido prefecture | uncultured methanobrevibacter sp. | species | 18 | 0 |
| japan | iwate prefecture | uncultured methanobacteriaceae archaeon | species | 1 | 0 |
| japan | iwate prefecture | uncultured methanobacterium sp. | species | 1 | 0 |
| japan | kagoshima prefecture | methanobacterium petrolearium | species | 28 | 0 |
| japan | kanagawa prefecture | methanothermobacter sp. | species | 4 | 0 |
| japan | kumamoto prefecture | uncultured methanobacterium sp. | species | 3 | 0 |
| japan | kyoto prefecture | methanobacterium | genus | 0 | 1 |
| japan | kyoto prefecture | methanobrevibacter | genus | 0 | 1 |
| japan | niigata prefecture | methanothermobacter tenebrarum | species | 2 | 0 |
| malaysia | | methanobacterium sp. uba74 | species | 1 | 0 |
| mexico | | uncultured methanobacterium sp. | species | 7 | 0 |
| mexico | morelos | methanobacterium paludis | species | 1 | 0 |
| netherlands | | methanobacterium subterraneum | species | 42 | 0 |
| netherlands | | uncultured methanobacterium sp. | species | 1 | 0 |
| netherlands | gelderland province | methanobacterium sp. | species | 3 | 0 |
| netherlands | gelderland province | methanobrevibacter arboriphilus | species | 1 | 0 |
| new caledonia | | methanobacterium sp. 3ac | species | 1 | 0 |
| new caledonia | | methanobacterium sp. 3h2 | species | 1 | 0 |
| new caledonia | | methanobacterium sp. can | species | 1 | 0 |
| new zealand | | methanobacterium formicicum | species | 3 | 0 |
| new zealand | | methanobrevibacter sp. 229/11 | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. 229/14 | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. 229/4 | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. 229/5 | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. abm1 | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. abm23 | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. alpaca | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. d5 | species | 3 | 0 |
| new zealand | | methanobrevibacter sp. g16 | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. r4c | species | 1 | 0 |
| new zealand | | methanobrevibacter sp. sm9 | species | 2 | 0 |
| new zealand | | methanobrevibacter sp. ylm1 | species | 3 | 0 |
| new zealand | | methanosphaera sp. a4 | species | 1 | 0 |
| new zealand | | methanosphaera sp. iso3-f5 | species | 2 | 0 |
| new zealand | manawatu-wanganui | methanobrevibacter millerae | species | 2 | 0 |
| new zealand | manawatu-wanganui | methanobrevibacter olleyae | species | 2 | 0 |
| nigeria | | uncultured methanobacterium sp. | species | 4 | 0 |
| nigeria | | uncultured methanobrevibacter sp. | species | 30 | 0 |
| nigeria | | uncultured methanosphaera sp. | species | 4 | 0 |
| nigeria | | uncultured methanothermobacter sp. | species | 5 | 0 |
| norway | more og romsdal county | methanobrevibacter | genus | 0 | 1 |
| norway | svalbard | methanobacterium sp. | species | 1 | 0 |
| pakistan | | uncultured methanobacteriaceae archaeon | species | 1 | 0 |
| philippines | | uncultured methanobacteriaceae archaeon | species | 3 | 0 |
| philippines | | uncultured methanobacterium sp. | species | 2 | 0 |
| republic of the congo | pointe-noire department | methanobrevibacter sp. | species | 2 | 0 |
| russia | | methanobacterium aarhusense | species | 1 | 0 |
| russia | | methanobacterium sp. | species | 1 | 0 |
| russia | | methanothermobacter defluvii | species | 6 | 0 |
| russia | | methanothermobacter sp. | species | 1 | 0 |
| russia | | uncultured methanobacterium sp. | species | 7 | 0 |
| russia | | uncultured methanothermobacter sp. | species | 12 | 0 |
| russia | khabarovsk krai | methanobacterium arcticum | species | 77 | 0 |
| russia | khabarovsk krai | methanobacterium veterum | species | 35 | 0 |
| russia | tomsk oblast | uncultured methanobacteriaceae archaeon | species | 2 | 0 |
| saudi arabia | makkah region | methanobacterium sp. | species | 81 | 0 |
| singapore | | methanobrevibacter smithii | species | 0 | 1 |
| singapore | | methanobrevibacter sp. | species | 2 | 0 |
| slovakia | | uncultured methanobacterium sp. | species | 3 | 0 |
| south africa | | uncultured methanobrevibacter sp. | species | 1 | 0 |
| south africa | free state province | methanobacterium sp. uba176 | species | 1 | 0 |
| south africa | mpumalanga province | methanobrevibacter smithii | species | 1 | 0 |
| south korea | daejeon city | methanobrevibacter smithii | species | 2 | 0 |
| south korea | seoul city | uncultured methanobacterium sp. | species | 6 | 0 |
| spain | | methanobacterium sp. | species | 1 | 0 |
| spain | | uncultured methanobrevibacter sp. | species | 5 | 0 |
| spain | | uncultured methanosphaera sp. | species | 2 | 0 |
| spain | madrid | uncultured methanobacterium sp. | species | 1 | 0 |
| spain | madrid | uncultured methanothermobacter sp. | species | 1 | 0 |
| svalbard and jan mayen | svalbard | methanobacterium | genus | 0 | 1 |
| sweden | ostergoetland | uncultured methanobacterium sp. | species | 1 | 0 |
| switzerland | | methanobrevibacter arboriphilus | species | 1 | 0 |
| taiwan | | methanobacterium | genus | 0 | 1 |
| taiwan | | methanothermobacter | genus | 0 | 1 |
| tanzania | | uncultured methanobacterium sp. | species | 1 | 0 |
| tanzania | | uncultured methanobrevibacter sp. | species | 9 | 0 |
| thailand | | uncultured methanobacterium sp. | species | 37 | 0 |
| thailand | | uncultured methanobrevibacter sp. | species | 1 | 0 |
| turkey | | uncultured methanobacterium sp. | species | 3 | 0 |
| turkey | | uncultured methanosphaera sp. | species | 1 | 0 |
| turkey | | uncultured methanothermobacter sp. | species | 1 | 0 |
| united states | | methanobacterium sp. | species | 1 | 0 |
| united states | | methanobrevibacter sp. | species | 2 | 0 |
| united states | | methanobrevibacter thaueri | species | 88 | 0 |
| united states | | methanobrevibacter woesei | species | 26 | 0 |
| united states | | uncultured methanothermobacter sp. | species | 2 | 0 |
| united states | alaska | methanobacteriaceae archaeon 41_258 | species | 170 | 0 |
| united states | alaska | methanobacteriaceae archaeon mg | species | 1 | 0 |
| united states | alaska | methanobacterium sp. 42_16 | species | 220 | 0 |
| united states | alaska | methanothermobacter thermautotrophicus | species | 2 | 0 |
| united states | alaska | uncultured methanobacterium sp. | species | 10 | 0 |
| united states | alaska | uncultured methanothermobacter sp. | species | 1 | 0 |
| united states | california | methanobacterium sp. | species | 3 | 0 |
| united states | california | methanobrevibacter | genus | 0 | 2 |
| united states | california | methanobrevibacter smithii | species | 0 | 2 |
| united states | california | methanothermobacter sp. | species | 1 | 0 |
| united states | illinois | methanothermobacter thermautotrophicus | species | 2 | 0 |
| united states | minnesota | methanobacterium sp. | species | 1 | 0 |
| united states | minnesota | methanobrevibacter smithii | species | 34 | 0 |
| united states | mississippi | methanobrevibacter | genus | 0 | 1 |
| united states | mississippi | methanobrevibacter smithii | species | 0 | 1 |
| united states | new mexico | methanobacterium | genus | 0 | 1 |
| united states | north dakota | methanobacterium | genus | 0 | 1 |
| united states | pennsylvania | methanobrevibacter smithii | species | 1 | 0 |
| united states | virginia | methanobacterium sp. | species | 1 | 0 |
| united states | wisconsin | methanobacterium | genus | 0 | 1 |
| united states | wyoming | methanobacterium | genus | 0 | 1 |
| united states | wyoming | methanobrevibacter sp. uba594 | species | 1 | 0 |
| united states | wyoming | methanothermobacter thermautotrophicus | species | 9 | 0 |
| venezuela | apure | methanobrevibacter | genus | 0 | 1 |
| venezuela | apure | methanobrevibacter ruminantium | species | 0 | 1 |
| venezuela | apure | methanosphaera | genus | 0 | 1 |