prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Planctomycetes" Garrity and Holt 2001 Class Phycisphaerae Fukunaga et al. 2010 Order Phycisphaerales Fukunaga et al. 2010 [monotypic] 1 Family Phycisphaeraceae Fukunaga et al. 2010