Thermococcaceae Zillig et al. 1988 Thermococcus Zillig et al. 1983 Universal Root Woese et al. 1990 Archaea Woese et al. 1990 Euryarchaeota (sic) Garrity and Holt 2001 Methanobacteriota corrig. Garrity and Holt 2001 Thermococci Zillig and Reysenbach 2002 Thermococcales Zillig et al. 1988 Thermococcaceae Zillig et al. 1988 Thermococcales Zillig et al. 1988 Pyrococcus Fiala and Stetter 1986 Palaeococcus Takai et al. 2000 Thermococcus Zillig et al. 1983 Takai K. Sugai A. Itoh T. Horikoshi K. Palaeococcus ferrophilus gen. nov., sp. nov., a barophilic, hyperthermophilic archaeon from a deep-sea hydrothermal vent chimney. 2000 50 2 489 500 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/00207713-50-2-489 10758851 Zillig W. Holz I. Klenk H.P. Trent J. Wunderl S. Janekovic D. Insel E. Haas B. Pyrococcus woesei, sp. nov., an ultra-thermophilic marine archaebacterium, representing a novel order, Thermococcales. 1987 9 1-2 62 70 Systematic and Applied Microbiology Syst Appl Microbiol 0723-2020 http://dx.doi.org/10.1016/S0723-2020(87)80057-7