Methanobacteriales is an order of archaeans in the class Methanobacteria.

[1] Species within this order differ from other methanogens in that they can use fewer catabolic substrates and have distinct morphological characteristics, lipid compositions, and RNA sequences.

Most species are Gram-positive with rod-shaped bodies and some can form long filaments.

[2] The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [3] and National Center for Biotechnology Information (NCBI).

[1] Methanothermus Methanothermobacter species-group 2 Methanothermobacter Methanobacterium species-group 2 Methanobacterium Methanosphaera Methanobrevibacter Methanothermus Methanothermobacter species-group 2 Methanothermobacter "Methanacia" "Methanoflexus" "Methanovirga" "Methanobinarius" Methanobrevibacter "Methanarmilla" "Methanocatella" Methanobacterium species-group 3 Methanobacterium species-group 2 Methanosphaera Methanobacterium This Euryarchaeota-related article is a stub.