Pirella Schlesner and Hirsch 1984 Pirella Schlesner and Hirsch 1984 Pirella staleyi Schlesner and Hirsch 1984 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 Planctomycetales Schlesner and Stackebrandt 1987 emend. Dedysh et al. 2020 Planctomycetaceae Schlesner and Stackebrandt 1987 emend. Dedysh et al. 2020 Pirella Schlesner and Hirsch 1984 Planctomycetaceae Schlesner and Stackebrandt 1987 emend. Dedysh et al. 2020 Blastopirellula Schlesner et al. 2004 Rhodopirellula Schlesner et al. 2004 emend. Kallscheuer et al. 2020 Planctomyces Gimesi 1924 emend. Hirsch and Skuja 1974 (Approved Lists 1980) Schlesneria Kulichevskaya et al. 2007 Zavarzinella Kulichevskaya et al. 2009 Telmatocola Kulichevskaya et al. 2012 Rubinisphaera Scheuner et al. 2015 emend. Kallscheuer et al. 2020 Planctopirus Scheuner et al. 2015 Gimesia Scheuner et al. 2015 emend. Kumar et al. 2020 Roseimaritima Bondoso et al. 2016 emend. Wiegand et al. 2021 Rubripirellula Bondoso et al. 2016 emend. Kallscheuer et al. 2020 Thermogutta Slobodkina et al. 2015 Planctomicrobium Kulichevskaya et al. 2015 Thermostilla Slobodkina et al. 2016 Mariniblastus Lage et al. 2017 Pirellula (Schlesner and Hirsch 1984) Schlesner and Hirsch 1987 emend. Schlesner et al. 2004 Fuerstia (sic) Kohn et al. 2020 Fuerstiella corrig. Kohn et al. 2020 Tuwongella Seeger et al. 2017 Gemmata Franzmann and Skerman 1985 emend. Scheuner et al. 2014 Isosphaera Giovannoni et al. 1995 Singulisphaera Kulichevskaya et al. 2008 emend. Kulichevskaya et al. 2012 Bythopirellula Storesund and Øvreås 2021 emend. Wiegand et al. 2020 Thalassoglobus Kohn et al. 2020 Alienimonas Boersma et al. 2021 Novipirellula Kallscheuer et al. 2021 Bremerella Rensink et al. 2021 emend. Godinho et al. 2021 Calycomorphotria Schubert et al. 2021 Caulifigura Kallscheuer et al. 2021 Crateriforma Peeters et al. 2021 emend. Kumar et al. 2021 Maioricimonas Rivas-Marin et al. 2021 Polystyrenella Peeters et al. 2021 Symmachiella Salbreiter et al. 2021 Pirella marina Schlesner 1987 Pirella staleyi Schlesner and Hirsch 1984 Schlesner H. Stackebrandt E. Assignment of the genera Planctomyces and Pirella to a new family Planctomycetaceae fam. nov. and description of the order Planctomycetales ord. nov. 1986 8 174 176 Systematic and Applied Microbiology Syst Appl Microbiol 0723-2020 10.1016/S0723-2020(86)80072-8 Schlesner H. Hirsch P. Assignment of ATCC 27377 to Pirella gen. nov. as Pirella staleyi comb. nov. 1984 34 4 492 495 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-34-4-492 Pirellula (Schlesner and Hirsch 1984) Schlesner and Hirsch 1987 emend. Schlesner et al. 2004 Schlesner H. Hirsch P. Rejection of the genus name Pirella for pear-shaped budding bacteria and proposal to create the genus Pirellula gen. nov. 1987 37 4 441 441 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-37-4-441 Schlesner H. Hirsch P. Assignment of ATCC 27377 to Pirella gen. nov. as Pirella staleyi comb. nov. 1984 34 4 492 495 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-34-4-492 The name Pirella Schlesner and Hirsch 1984 is illegitimate because of precedence of the fungal genus Pirella Bainier 1883 (Rule 51b(4)) Replaced by Pirellula.