(Metacylididae) (Metacylididae) is a biological family of the class Ciliatea and order Oligotrichida.
Climacocylis
Coxliella
Helicostomella
Metacylis
Ascampbelliellidae
Codonellidae
Codonellopsidae
Cyttarocyclididae
Dictyocystidae
Epiplocylididae
Halteriidae
Metacylididae
Petalotrichidae
Ptychocylididae
Rhabdonellidae
Stentoridae
Strobilididae
Strombidiidae
Tintinnidae
Tintinnidiidae
Undellidae
Xystonellidae