paracercomonadidae paracercomonadidae the paracercomonads are a group of cercozoan protists. taxonomically, they comprise the family paracercomonadidae, order paracercomonadida and subclass paracercomonada. due to their morphological similarities to the cercomonads, members of this family were grouped with cercomonas and similar taxa from the beginning. however, their similarities are due to convergent evolution. paracercomonadidae scientific classification domain: eukaryota clade: diaphoretickes clade: sar phylum: cercozoa superclass: ventrifilosa class: sarcomonadea subclass: paracercomonadacavalier-smith, 2018 order: paracercomonadidacavalier-smith, 2018 family: paracercomonadidaecavalier-smith, 2012 genera paracercomonas nucleocercomonas metabolomonas brevimastigomonas phytocercomonas classification there are currently 5 genera of paracercomonads: brevimastigomonas arndt, nitsche, brabender, domonell & kiss, 2012 metabolomonas arndt, nitsche, brabender, domonell & kiss, 2012 nucleocercomonas arndt, nitsche, brabender, domonell & kiss, 2012 paracercomonas cavalier-smith & bass, 2006 phytocercomonas braithwaite, 2013