[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain "Archaea" Woese et al. 1990 stat. inval. see Domain Archaea Woese et al. 2024
     Phylum "Euryarchaeota" Garrity and Holt 2002 stat. inval. see Kingdom Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024
       Class Thermoplasmata Reysenbach 2002
         Order Thermoplasmatales Reysenbach 2002
           Family Picrophilaceae Schleper et al. 1996
             Genus Picrophilus Schleper et al. 1996
               Picrophilus oshimae Schleper et al. 1996