Position in a system
| system | Vitae - living organisms |
| domain | Archaea Woese, Kandler & Wheelis, 1990 - archeans |
| phylum | Euryarchaeota C.R. Woese, Kandler & Wheelis, 1990 |
| class | Methanopyri G.M. Garrity & J.G. Holt, 2002 |
| order | Methanopyrales R. Huber & K.O. Stetter, 2002 |
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