Sessilida

Sessilida is the largest order of the peritrich ciliates.

List of families

 * Ellobiophryidae
 * Epistylididae
 * Lagenophryidae
 * Operculariidae
 * Rovinjellidae
 * Scyphidiidae
 * Vaginicolidae
 * Vorticellidae
 * Zoothamniidae