After NCBI (National Center for Biotechnology Information)

<==o Archaea Woese et al., 1990 [Archaebacteria Woese & Fox 1977; Metabacteria; Mendosicutes]
   |-- unclassified archaea
   |--o Crenarchaeota Garrity & Holt 2002 [Eocyta] (eocytes)
   |  |-- crenarchaeote 768-28 
   |  |-- crenarchaeote OlA-40 
   |  |-- crenarchaeote OlA-444 
   |  |-- crenarchaeote OlA-592 
   |  |-- crenarchaeote OlA-6 
   |  |-- crenarchaeote SRI-298 
   |  |-- marine crenarchaeote RS.Sph.032 
   |  |-- marine crenarchaeote RS.Sph.033 
   |  |-- crenarchaeote symbiont of Axinella damicornis
   |  |-- crenarchaeote symbiont of Axinella verrucosa
   |  |-- crenarchaeote symbiont of Axinella sp.
   |  `--o span class="hightaxa">Thermoprotei Reysenbach, 2002
   |     |--o Caldisphaerales
   |     |  `--o Caldisphaera
   |     |     |-- C. lagunensis Itoh et al., 2003
   |     |     `-- C. dracosis
   |     |--o Cenarchaeales DeLong & Preston, 1996
   |     |  `-- Cenarchaeum symbiosum DeLong & Preston, 1996
   |     |-- Desulfurococcales Huber & Stetter, 2002 [Igneococcales]
   |     |--o Nitrosopumilales 
   |     |  `-- Nitrosopumilus maritimus Konneke et al., 2006
   |     |-- Sulfolobales Stetter, 1989
   |     `-- Thermoproteales Zillig & Stetter, 1982 emend. Burggraf et al., 1997
   |--o Euryarchaeota Garrity & Holt, 2002
   |  |-- euryarchaeote J3.25-8 
   |  |-- euryarchaeote D4.75-18 
   |  |-- euryarchaeote D4.75-4 
   |  |-- euryarchaeote DJ3.25-13 
   |  |-- euryarchaeote J4.75-12 
   |  |-- euryarchaeote J4.75-15 
   |  |-- euryarchaeote J4.75-24 
   |  |-- euryarchaeote SvA99MeOH 
   |  |-- euryarchaeote SvA99TMA 
   |  |-- methanogenic archaeon CH1270 
   |  |-- methanogenic archaeon F1/B-1 
   |  |-- methanogenic archaeon F1/B-2 
   |  |-- methanogenic archaeon F1/B-3 
   |  |-- methanogenic archaeon F1/P-1 
   |  |-- methanogenic archaeon F1/P-2 
   |  |-- methanogenic archaeon F1/P-3 
   |  |-- methanogenic archaeon F4/B-1 
   |  |-- methanogenic archaeon F4/B-2 
   |  |-- methanogenic archaeon F4/B-3 
   |  |-- methanogenic archaeon F4/P-1 
   |  |-- methanogenic archaeon F4/P-2 
   |  |-- methanogenic archaeon F4/P-3 
   |  |-- methanogenic archaeon SANAE 
   |  |-- methanogenic archaeon U3/B-1 
   |  |-- methanogenic archaeon U3/P-1 
   |  |-- methanogenic archaeon ZC-1
   |  |-- Aciduliprofundum boonei
   |  |-- Archaeoglobi Garrity & Holt, 2002 [Archaeoglobea Cavalier-Smith 2002]
   |  |-- Halobacteria Grant et al., 2002 [Halomebacteria Cavalier-Smith, 2002, in partim]
   |  |-- Methanobacteria Boone, 2002 [Archaeobacteria Murray, 1988]
   |  |-- Methanococci Boone 2002 [Methanothermea Cavalier-Smith, 2002]
   |  |-- Methanomicrobia
   |  |--o Methanopyri Garrity & Holt, 2002
   |  |  `--o Methanopyrales Huber & Stetter, 2002
   |  |     `--o Methanopyraceae Huber & Stetter, 2002
   |  |        `--o Methanopyrus Kurr et al., 1992
   |  |           `--o M. kandleri Kurr et al., 1992
   |  |              `-- M. kandleri AV19
   |  |-- Thermococci Zillig and Reysenbach 2002 [Protoarchaea Cavalier-Smith 2002]
   |  `-- Thermoplasmata Reysenbach, 2002
   |--o Korarchaeota Barns et al. 1996 [Xenarchaea; Xenarchaeota]
   |  |-- korarchaeote OPF1-KOR 
   |  `-- korarchaeote SRI-306
   `--o span class="hightaxa">Nanoarchaeota Huber et al., 2002
      `--o Nanoarchaeum equitans Huber et al. 2002 [Microarchaeum]
         `-- Nanoarchaeum equitans Kin4-M 

Special thanks to:

Nils Hartmann, for collecting this information and species.

Reference(s):