Microvirgula aerodenitrificans gen. Methanocalculus halotolerans gen. A new genus of the order Actinomycetales , Cryptosporangium gen.
Bacillus pseudomycoides sp.
Methanothrix soehngenii VP and the genus Methanothrix VP as nomina confusa , and transfer of Methanothrix thermophila VP to the genus Methanosaeta VP as Methanosaeta thermophila comb.