Domain Bacteria Woese et al. 1990 Phylum Planctomycetes Garrity and Holt 2001 Class "Planctomycetacia" Order Planctomycetales Schlesner and Stackebrandt 1987 Family Planctomycetaceae Schlesner and Stackebrandt 1987 Genus Gemmata Franzmann and Skerman 1985