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Family "Ignisphaeraceae" Rinke et al. 2020 ex Chuvochina et al. 2023. Ignisphaera Niederberger et al. 2006; Family "Zestosphaeraceae" Pallen, Rodriguez-R & Alikhan 2022. Zestosphaera St. John et al. 2021; Family Sulfolobaceae Stetter 1989. Acidianus Segerer et al. 1986 ["Sulfosphaerellus" Zhong et al. 1982; Desulfurolobus Zillig & Böck 1987]
Archaea were initially classified as bacteria, receiving the name archaebacteria (/ ˌ ɑːr k i b æ k ˈ t ɪər i ə /, in the Archaebacteria kingdom), but this term has fallen out of use. [5] Archaeal cells have unique properties separating them from Bacteria and Eukaryota. Archaea are further divided into multiple recognized phyla.
Euryarchaeota (from Ancient Greek εὐρύς eurús, "broad, wide") is a kingdom of archaea. [3] Euryarchaeota are highly diverse and include methanogens, which produce methane and are often found in intestines; halobacteria, which survive extreme concentrations of salt; and some extremely thermophilic aerobes and anaerobes, which generally live at temperatures between 41 and 122 °C.
The three-domain system adds a level of classification (the domains) "above" the kingdoms present in the previously used five- or six-kingdom systems.This classification system recognizes the fundamental divide between the two prokaryotic groups, insofar as Archaea appear to be more closely related to eukaryotes than they are to other prokaryotes – bacteria-like organisms with no cell nucleus.
Bacteria (prokaryotes, together with Archaea) share many common features. These commonalities include the lack of a nuclear membrane, unicellularity, division by binary-fission and generally small size. The various species can be differentiated through the comparison of several characteristics, allowing their identification and classification.
Metagenomic analyses recover a two-domain system with the domains Archaea and Bacteria; in this view of the tree of life, Eukaryotes are derived from Archaea. [ 57 ] [ 58 ] [ 59 ] With the later gene pool of LUCA's descendants, sharing a common framework of the AT/GC rule and the standard twenty amino acids, horizontal gene transfer would have ...
Archaea Sulfolobus infected with specific virus STSV-1: Scientific classification; Domain: Archaea: Kingdom: Proteoarchaeota Petitjean et al. 2014: Superphyla and phyla [1] TACK superphylum "Aigarchaeota" "Bathyarchaeota" Thermoproteota "Geoarchaeota" "Korarchaeota" Nitrososphaerota "Verstraetearchaeota" Asgard superphylum "Heimdallarchaeota ...
Halobacteriaceae is a family in the order Halobacteriales and the domain Archaea. [1] Halobacteriaceae represent a large part of halophilic Archaea, along with members in two other methanogenic families, Methanosarcinaceae and Methanocalculaceae. [2] The family consists of many diverse genera that can survive extreme environmental niches. [3]