anaeromonadea anaeromonadea anaeromonadea is a class of excavates, comprising the oxymonads and trimastix. anaeromonadea monocercomonoides melolanthae scientific classification domain: eukaryota (unranked): excavata phylum: metamonada subphylum: anaeromonadacavalier-smith, 1996/7 class: anaeromonadeacavalier-smith, 1996/7, emend. 1999 orders paratrimastigidae trimastigida oxymonadida synonyms oxymonadea grassé 1952 pyrsonympha axostylea another name used is "preaxostyla". phylogeny and taxonomy based on the work of zhang et al. 2015. trimastix kent 1880 paratrimastix zhang et al. 2015 oxymonadida grassé 1952 emend. cavalier-smith 2003