Vorticellidae

Vorticellidae is a family of ciliates belonging to the order Sessilida. They are colonial or unicellular organisms that are attached to a substrate via a stalk. The distinguishing characteristic of the family is a helical spasmoneme within the stalk that is contractile.

Members of this family are common in marine, freshwater, and terrestrial habitats around the world.

Genera
Genera:
 * Anthochlo e Joseph, 1882
 * Apocarchesium Ji & Kusuoka, 2009
 * Baikalaster Jankowski, 1986
 * Baikalonis Jankowski, 1982
 * Carchesium Ehrenberg, 1831
 * Cotensita Jankowski, 1982
 * Epicarchesium Jankowski, 1985
 * Intranstylum Fauré-Fremiet, 1904
 * Parazoothamnium Piesik, 1975
 * Pelagovorticella Jankowski, 1980
 * Piesika Warren, 1988
 * Planeticovorticella Clamp & Coats, 2000
 * Pseudovorticella Foissner & Schiffmann, 1975
 * Rugaecaulis Lom & de Puytorac, 1994
 * Ruthiella Schödel, 1983
 * Spinivorticella Jankowski, 1993
 * Tucolesca  Lom in Corliss, 1979
 * Vorticella Linnaeus, 1767
 * Vorticellides Foissner, Blake, Wolf, Breiner & Stoeck, 2009