vaginicolidae vaginicolidae vaginicolidae is a family of peritrichs in the order sessilida. vaginicolidae cothurnia crystallini scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: ciliophora subphylum: intramacronucleata class: oligohymenophorea subclass: peritrichia order: sessilida family: vaginicolidaede fromentel, 1874 genera cothurnia platycola pyxicola thuricola vaginicola