# List of annelid families

List of annelid families describes the taxa relationships in the phylum Annelida, which contains more than 17,000 extant species including ragworms, earthworms, and leeches.

## Class Polychaeta
### Palpata

* Sub-class Errantia

#### Order Amphinomida

** Family Amphinomidae Savigny in Lamarck, 1818
** Family Euphrosinidae Williams, 1851

#### Order Eunicida

** Family Dorvilleidae Chamberlin, 1919
** Family Eunicidae Berthold, 1827
** Family Hartmaniellidae Imajima, 1977
** Family Lumbrineridae Schmarda, 1861
** Family Oenonidae Kinberg, 1865
** Family Onuphidae Kinberg, 1865

#### Order Phyllodocida

** Family Acoetidae Kinberg, 1856
** Family Alciopidae Ehlers, 1864
** Family Aphroditidae Malmgren, 1867
** Family Chrysopetalidae Ehlers, 1864
** Family Eulepethidae Chamberlin, 1919
** Family Glyceridae Grube, 1850
** Family Goniadidae Kinberg, 1866
** Family Hesionidae Grube, 1850
** Family Ichthyotomidae Eisig, 1906
** Family Iospilidae Bergstroem, 1914
** Family Lacydoniidae Bergstroem, 1914
** Family Lopadorrhynchidae Claparede, 1868
** Family Myzostomatidae Benham, 1896
** Family Nautiliniellidae Miura and Laubier, 1990
** Family Nephtyidae Grube, 1850
** Family Nereididae Johnston, 1865
** Family Paralacydoniidae Pettibone, 1963
** Family Pholoidae Kinberg, 1858
** Family Phyllodocidae Oersted, 1843
** Family Pilargidae Saint-Joseph, 1899
** Family Pisionidae Southern, 1914
** Family Polynoidae Malmgren, 1867
** Family Pontodoridae Bergstroem, 1914
** Family Sigalionidae Malmgren, 1867
** Family Sphaerodoridae Malmgren, 1867
** Family Syllidae Grube, 1850
** Family Tomopteridae Johnston, 1865
** Family Typhloscolecidae Uljanin, 1878

#### Incertae sedis

** Family Aberrantidae Wolf, 1987
** Family Nerillidae Levinsen, 1883
** Family Spintheridae Johnston, 1865
* Canalipalpata

### Scolecida

* Family Aeolosomatidae
* Family Arenicolidae
* Family Capitellidae
* Family Cossuridae
* Family Maldanidae
* Family Opheliidae
* Family Orbiniidae
* Family Paraonidae
* Family Parergodrilidae
* Family Potamodrilidae
* Family Psammodrilidae
* Family Questidae
* Family Scalibregmatidae

### Echiura
#### Order Echiuroidea

* Suborder Bonelliida
** Family Bonelliidae
** Family Ikedidae
* Suborder Echiurida
** Family Echiuridae
** Family Thalassematidae
** Family Urechidae

## Class Clitellata

*** Order Branchiobdellida
* Subclass Hirudinea (Leech)
** Infraclass Acanthobdellidea
** Infraclass Euhirudinea
*** Order Arhynchobdellida
**** Suborder Erpobdelliformes
***** Family Erpobdellidae Blanchard, 1894
***** Family Gastrostomobdellidae Richardson, 1971
***** Family Orobdellidae Nakano, Ramlah & Hikida, 2012
***** Family Salifidae Johansson, 1910
**** Suborder Hirudiniformes
***** Family Cylicobdellidae
***** Family Haemadipsidae
***** Family Haemopidae
***** Family Hirudinidae
***** Family Semiscolecidae
***** Family Xerobdellidae
*** Order Rhynchobdellida
***** Family Glossiphoniidae
***** Family Ozobranchidae (disputed)
***** Family Piscicolidae

## Class Machaeridia †

* Family †Plumulitidae
* Family †Turrilepadidae
* Family †Lepidocoleidae

## Subphylum Sipuncula

* Class Phascolosomatidea
** Order Aspidosiphoniformes
*** Family Aspidosiphonidae
** Order Phascolosomatiformes
*** Family Phascolosomatidae
* Class Sipunculidea
** Order Golfingiiformes
*** Family Golfingiidae
*** Family Phascolionidae
*** Family Themistidae
** Order Sipunculiformes
*** Family Sipunculidae