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]).

Based on the work of Zhang et al.

[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.

This Excavata-related article is a stub.