cariacothrix cariacothrix cariacothrix is a genus of ciliates in the subphylum intramacronucleata. it contains only one species, cariacothrix caudata, and is the only genus in the monotypic family cariacotrichidae, order cariacotrichida, and class cariacotrichea. cariacothrix scientific classification domain: eukaryota clade: diaphoretickes clade: sar clade: alveolata phylum: ciliophora subphylum: intramacronucleata class: cariacotricheaorsi et al, 2011 order: cariacotrichidaorsi et al, 2011 family: cariacotrichidaeorsi et al, 2011 genus: cariacothrixorsi et al, 2011 species: c. caudata binomial name cariacothrix caudataorsi et al, 2011 synonyms (class) cariotrichea