Methanobacteriumwolfei is the correct name if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Methanobacterium.
In Validation List no. 17, the year of the effective publication is erroneously cited as 1985.Publication:
Anonymous. Validation list no. 17. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1985; 35:223-225.