Kingdom Fungi R.T.Moore (1980) - fungi Phylum Neocallimastigomycota M.J. Powell (2007) [monotypic] Class Neocallimastigomycetes M.J. Powell (2007) [monotypic] Order Neocallimastigales J.L. Li, I.B. Heath & L. Packer (1993) Family Sphaeromonadaceae Doweld (2014) [monotypic] 1 Genus Sphaeromonas E. Liebet. (1910)