After NCBI (National Center for Biotechnology Information)
<==o Methanobacteria Boone 2002 [Archaeobacteria Murray 1988]
`--o Methanobacteriales Balch and Wolfe 1981
|--o Methanobacteriaceae Barker 1956
| |-- archaeon A2.95.53
| |-- archaeon A8.96.15
| |-- archaeon A9.96.64
| |-- methanogen 5c
| |-- methanogen MEm1 associated with Eudiplodinium maggii
| |-- methanogen MEm2 associated with Eudiplodinium maggii
| |-- methanogen MEm3 associated with Eudiplodinium maggii
| |-- methanogen MIp1 associated with Isotricha prostoma
| |-- methanogen MIp2 associated with Isotricha prostoma
| |-- methanogen MPm1 associated with Polyplastron multivesiculatum
| |-- methanogen MPm2 associated with Polyplastron multivesiculatum
| |-- methanogen MPm3 associated with Polyplastron multivesiculatum
| |--o Methanobacterium Kluyver and van Niel 1936
| | |-- Methanobacterium aarhusense Shlimon et al. 2004
| | |-- Methanobacterium alcaliphilum Worakit et al. 1986
| | |-- Methanobacterium beijingense Ma et al. 2005 [incl. Methanobacterium sp. 8-2]
| | |-- Methanobacterium bryantii Balch and Wolfe 1981 emend. Judicial Commission 1992
| | |-- Methanobacterium congolense Cuzin et al. 2001
| | |-- Methanobacterium curvum Sun et al. 2001
| | |-- Methanobacterium espanolae Patel et al. 1990 [Methanobacterium espanolense]
| | |-- Methanobacterium formicicum Schnellen 1947
| | |-- Methanobacterium ivanovii Jain et al. 1988 [Methanococcus ivanovii]
| | |-- Methanobacterium oryzae Joulian et al. 2000 [incl. Methanobacterium sp. Fpi, Methanobacterium sp. DSM 11106]
| | |-- Methanobacterium palustre Zellner et al. 1990
| | |-- Methanobacterium subterraneum Kotelnikova et al. 1998
| | |-- Methanobacterium thermaggregans Blotevogel and Fischer 1988
| | |-- Methanobacterium uliginosum Konig 1985
| | |-- Methanobacterium sp. C5/51
| | |-- Methanobacterium sp. Ch
| | |-- Methanobacterium sp. IM1
| | |-- Methanobacterium sp. M2
| | |-- Methanobacterium sp. Mg38
| | |-- Methanobacterium sp. OM15
| | |-- Methanobacterium sp. MK4
| | |-- Methanobacterium sp. Ps21
| | |-- Methanobacterium sp. SA-12
| | |-- Methanobacterium sp. Tc3
| | `-- Methanobacterium sp. TM-8
| |--o Methanobrevibacter Balch and Wolfe 1981
| | |-- Methanobrevibacter acididurans Savant et al. 2002 [incl. Methanobrevibacter sp. ATM]
| | |-- Methanobrevibacter arboriphilicus (Zeikus and Henning 1975) Balch and Wolfe 1981 [Methanobacterium arbophilicum Zeikus and Henning 1975, Methanobrevibacter arboriphilus]
| | |-- Methanobrevibacter curvatus Leadbetter and Breznak 1997
| | |-- Methanobrevibacter cuticularis Leadbetter and Breznak 1997
| | |-- Methanobrevibacter filiformis Leadbetter et al. 1998
| | |-- Methanobrevibacter gottschalkii Miller and Lin 2002
| | |-- Methanobrevibacter oralis Ferrari et al. 1995
| | |-- Methanobrevibacter ruminantium (Smith and Hungate 1958) Balch and Wolfe 1981 [Methanobacterium ruminantium Smith and Hungate 1958]
| | |-- Methanobrevibacter smithii Balch and Wolfe 1981
| | |-- Methanobrevibacter thaueri Miller and Lin 2002
| | |-- Methanobrevibacter woesei Miller and Lin 2002
| | |-- Methanobrevibacter wolinii Miller and Lin 2002
| | |-- Methanobrevibacter sp. 1Y
| | |-- Methanobrevibacter sp. 30Y
| | |-- Methanobrevibacter sp. 62
| | |-- Methanobrevibacter sp. 87.7
| | |-- Methanobrevibacter sp. AbM4
| | |-- Methanobrevibacter sp. AK-87
| | |-- Methanobrevibacter sp. FM1
| | |-- Methanobrevibacter sp. FMB1
| | |-- Methanobrevibacter sp. FMB2
| | |-- Methanobrevibacter sp. FMB3
| | |-- Methanobrevibacter sp. FMBK1
| | |-- Methanobrevibacter sp. FMBK2
| | |-- Methanobrevibacter sp. FMBK3
| | |-- Methanobrevibacter sp. FMBK4
| | |-- Methanobrevibacter sp. FMBK5
| | |-- Methanobrevibacter sp. FMBK6
| | |-- Methanobrevibacter sp. FMBK7
| | |-- Methanobrevibacter sp. HW23
| | |-- Methanobrevibacter sp. KM1H5-1P
| | |-- Methanobrevibacter sp. LRsD4
| | |-- Methanobrevibacter sp. Mc30
| | |-- Methanobrevibacter sp. MD101
| | |-- Methanobrevibacter sp. MD102
| | |-- Methanobrevibacter sp. MD103
| | |-- Methanobrevibacter sp. MD104
| | |-- Methanobrevibacter sp. MD105
| | |-- Methanobrevibacter sp. OCP
| | |-- Methanobrevibacter sp. RsI3
| | |-- Methanobrevibacter sp. RsW3
| | |-- Methanobrevibacter sp. XT106
| | |-- Methanobrevibacter sp. XT108
| | |-- Methanobrevibacter sp. XT109
| | |-- Methanobrevibacter sp. Z4
| | |-- Methanobrevibacter sp. Z6
| | |-- Methanobrevibacter sp. Z8
| | |-- Methanobrevibacter sp. ZA-10
| | `--o unclassified Methanobrevibacter
| | |-- endosymbiont 'TS1' of Trimyema compressum
| | |-- methanogenic endosymbiont of Nyctotherus cordiformis
| | |-- methanogenic endosymbiont of Nyctotherus ovalis
| | |-- methanogenic endosymbiont of Nyctotherus velox
| | |-- methanogenic symbiont RS104
| | |-- methanogenic symbiont RS105
| | |-- methanogenic symbiont RS208
| | |-- methanogenic symbiont RS301
| | |-- methanogenic symbiont RS404
| | |-- methanogenic symbiont RS801
| | `-- methanogenic symbiont RS802
| |--o Methanosphaera Miller and Wolin 1985
| | `--o Methanosphaera stadtmanae Miller and Wolin 1985 [Methanosphaera stadtmaniae, Methanosphaera stadtmanii]
| | `-- Methanosphaera stadtmanae DSM 3091
| `--o Methanothermobacter Wasserfallen et al. 2000 [Methanobacter Boone et al. 1993]
| |-- Methanothermobacter defluvii (Kotelnikova et al. 1994) Boone 2002 [Methanobacterium defluvii Kotelnikova et al. 1994]
| |--o Methanothermobacter marburgensis Wasserfallen et al. 2000
| | `-- Methanothermobacter marburgensis str. Marburg
| |--o Methanothermobacter thermautotrophicus (Zeikus and Wolfe 1972) Wasserfallen et al. 2000 [Methanobacterium thermoautotrophicus Zeikus and Wolfe 1972, Methanobacterium thermalcaliphilum Blotevogel et al. 1988, Methanobacterium thermalcaliphilum, Methanobacterium thermoformicicum Zhilina and Ilarionov 1986, Methanobacterium thermautotrophicum Zeikus & Wolfe 1972]
| | |-- Methanothermobacter thermautotrophicus str. Delta H
| | `-- Methanothermobacter thermautotrophicus str. Winter
| |-- Methanothermobacter thermoflexus (Kotelnikova et al. 1994) Boone 2002 [Methanobacterium thermoflexum Kotelnikova et al. 1994]
| |-- Methanothermobacter thermophilus (Laurinavichus et al. 1990) Boone 2002 [Methanobacterium thermophilum Laurinavichus et al. 1990]
| |-- Methanothermobacter wolfeii Winter et al. 1985) Wasserfallen et al. 2000 [Methanobacterium wolfei Winter et al. 1985, Methanobacterium wolfeii]
| `-- Methanothermobacter sp. THUT3
`--o Methanothermaceae Stetter et al. 1982
`--o Methanothermus Stetter et al. 1982
|-- Methanothermus fervidus Stetter et al. 1982 [Methanobacterium fervidus]
`-- Methanothermus sociabilis Stetter 1986
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