Paludisphaera Kulichevskaya et al. 2016 Paludisphaera borealis Kulichevskaya et al. 2016 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Planctomycetes (sic) Garrity and Holt 2021 Planctomycetota corrig. Garrity and Holt 2021 Planctomycetia (Cavalier-Smith 2002) Ward 2020 Isosphaerales Dedysh et al. 2020 Isosphaeraceae Kulichevskaya et al. 2016 Paludisphaera Kulichevskaya et al. 2016 Isosphaeraceae Kulichevskaya et al. 2016 Singulisphaera Kulichevskaya et al. 2008 emend. Kulichevskaya et al. 2012 Aquisphaera Bondoso et al. 2011 Isosphaera Giovannoni et al. 1995 Tundrisphaera Kulichevskaya et al. 2017 Tautonia Kovaleva et al. 2019 emend. Gaurav et al. 2021 Paludisphaera borealis Kulichevskaya et al. 2016 Kulichevskaya I.S. Ivanova A.A. Suzina N.E. Rijpstra W.I. Sinninghe Damsté J.S. Dedysh S.N. Paludisphaera borealis gen. nov., sp. nov., a hydrolytic planctomycete from northern wetlands, and proposal of Isosphaeraceae fam. nov. 2016 66 2 837 844 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.000799 26611145