Anaeromonadea

Anaeromonadea, also known as Preaxostyla,^[1][2] is a class of excavate protists, comprising the oxymonads, Trimastix,^[3] and Paratrimastix.^[4] This group is studied as a model system for reductive evolution of mitochondria,^[5] because it includes both organisms with anaerobic mitochondrion-like organelles (Trimastix^[6] and Paratrimastix^[7]), and those that have completely lost their mitochondria (oxymonads Monocercomonoides,^[8] Streblomastix, and Blattamonas^[6]).

Anaeromonadea
Monocercomonoides melolanthae
Scientific classification
Domain:	Eukaryota
(unranked):	Excavata
Phylum:	Metamonada
Subphylum:	Anaeromonada Cavalier-Smith, 1996/7
Class:	Anaeromonadea Cavalier-Smith, 1996/7, emend. 1999
Orders and genera
Paratrimastigidae Paratrimastix Trimastigida Trimastix Oxymonadida
Synonyms
Oxymonadea Grassé 1952 Pyrsonympha Axostylea

Phylogeny and taxonomy

Based on the work of Zhang et al. 2015.^[4]

	Trimastix Kent 1880 {Trimastigida Cavalier-Smith 2003: Trimastigidae Saville Kent 1880} Paratrimastix Zhang et al. 2015 {Paratrimastigidae Zhang et al. 2015} Oxymonadida Grassé 1952 emend. Cavalier-Smith 2003