Kingdom Fungi R.T.Moore (1980) - fungi Phylum Neocallimastigomycota M.J. Powell (2007) Class Neocallimastigomycetes M.J. Powell (2007) Order Neocallimastigales J.L. Li, I.B. Heath & L. Packer (1993) Genus Neocallimastix Vávra & Joyon ex I.B. Heath (1983)