👉 Methanocorpusculaceae is a phylum of bacteria that belong to the order Mecalobacteria and are characterized by their ability to ferment methanol as a source of energy, primarily for cellular respiration. These bacteria include species such as Methanococcus, which produces methane through fermentation, and Methanobacterium, which utilizes it as an energy source in the production of nitrate and oxalic acid.