Asgard archaea

Asgard archaea
Temporal range: Paleoarchean–Present
SEM image of Promethearchaeum syntrophicum
Scientific classification
Domain: Archaea
Kingdom: Promethearchaeati
Imachi et al. 2024
Phylum: Promethearchaeota
Imachi et al. 2024
Type genus
Promethearchaeum
Imachi et al., 2024
Classes
  • "Asgardarchaeia"
  • "Atabeyarchaeia"
  • "Baldrarchaeia"
  • "Borrarchaeia"
  • "Freyarchaeia"
  • "Heimdallarchaeia"
  • "Hermodarchaeia"
  • "Jordarchaeia"
  • "Odinarchaeia"
  • Promethearchaeia
  • "Sifarchaeia"
  • "Sleipnirarchaeota"
  • "Thorarchaeia"
  • "Wukongarchaeia"
Synonyms
List
    • "Asgard" Zaremba-Niedzwiedzka et al. 2017
    • "Asgardarchaeota" Da Cunha et al. 2017
    • "Asgardarchaeota" Bulzu et al. 2019
    • "Asgardarchaeota" Rinke et al. 2021
    • "Asgardaeota" Kirkpatrick, Walsh & D'Hondt 2019
    • "Asgardia" Cavalier-Smith & Chao 2020 (subphylum)
    • "Asgardia" Cavalier-Smith & Chao 2020 (class)

Asgard archaea (previously known as superphylum "Asgard" or phylum "Asgardarchaeota") are a kingdom belonging to the domain Archaea that contain eukaryotic signature proteins.

After including the kingdom category into ICNP, the only validly published names of this group are kingdom Promethearchaeati and phylum Promethearchaeota. All formerly proposed "phyla" would be de-ranked to classes in this framework. It appears that the eukaryotes, the domain that contains the animals, plants, fungi and protists, emerged within the Promethearchaeati, in a branch containing the "Heimdallarchaeia". This supports the two-domain system of classification over the three-domain system.

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