[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain "Archaea" Woese et al. 1990 Phylum "Euryarchaeota" Garrity and Holt 2001 Class Thermococci Zillig and Reysenbach 2002 Order Thermococcales Zillig 1988 Family Thermococcaceae Zillig 1988 Genus Thermococcus Zillig 1983 Thermococcus alcaliphilus Keller et al. 1997