Description of Postciliodesmatophora

Ciliates distinguished by well developed arrays of postciliary microtubules, includes preators, detritus feeders, and suspension feeders using an adoral zone of membranelles, no parasomal sacs; oral dikinetids, when present, have their postciliary microtubular ribbons often extending to support the cytopharynx; oral polykinetids when present vary from two to three rows of kinetosomes, usually with a complex infraciliature; polykinetids of heterotrichs may spiral out of the oral cavity onto the body surface where they define the peristomal field. The extrusomes are mucocysts, rhabdocysts and/or pigmentocysts; yhe cortical alveolar system is poorly developed; oral apparatus of the proter usually undergoes regression and redevelopment prior to and/or during cytokinesis.