Loukozoa (+
Ancyromonads) (From Greek ''loukos'': groove
) is a proposed taxon used in some classifications of
eukaryote
Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bact ...
s, consisting of the Metamonada and Malawimonadea.
Ancyromonads are closely related to this group, as sister of the entire group, or as sister of the Metamonada.
Amorphea may have emerged in this grouping, specifically as sister of the Malawimonads.
Originally, Loukozoa included
Anaeromonadea and
Jakobea
Jakobids are an order of free-living, heterotrophic, flagellar eukaryotes in the supergroup Excavata. They are small (less than 15 μm), and can be found in aerobic and anaerobic environments. The order Jakobida, believed to be monophyletic, co ...
.
In 2013, it consisted of three subphyla: Eolouka (
Tsukubea and
Jakobea
Jakobids are an order of free-living, heterotrophic, flagellar eukaryotes in the supergroup Excavata. They are small (less than 15 μm), and can be found in aerobic and anaerobic environments. The order Jakobida, believed to be monophyletic, co ...
),
Metamonad
The metamonads are microscopic eukaryotic organisms, a large group of flagellate amitochondriate Loukozoa. Their composition is not entirely settled, but they include the retortamonads, diplomonads, and possibly the parabasalids and oxymonad ...
a and Neolouka (''
Malawimonas
''Malawimonas'' is a Loukozoa genus, possible sister of the Podiata.
History of the discovery of Malawimonads
In 1993, Charles J O’ Kelly studied the jakobid groups flagellates and implications for the early diversification of eukaryotes a ...
''). Cavalier-Smith has recently removed Eolouka from Loukozoa, placing it instead in
Discoba
Excavata is a major supergroup of unicellular organisms belonging to the domain Eukaryota. It was first suggested by Simpson and Patterson in 1999 and introduced by Thomas Cavalier-Smith in 2002 as a formal taxon. It contains a variety of free- ...
.
With the root of the Eukaryota likely close to or in Loukozoa or Discoba, these groupings are studied to give unique information on the first Eukaryotes.
References
Excavata
Taxa named by Thomas Cavalier-Smith
Bikont phyla
{{Excavata-stub