Annelid families

Eulepethidae is a family of polychaetes belonging to the order Phyllodocida.

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Trichobranchidae is a family of annelids in the order Terebellida.

Poecilochaetidae is a family of marine worms within the Polychaeta. It is a monotypic family containing the single genus Poecilochaetus. Members of this family are benthic worms that burrow into soft sediments.

family of annelids

Moniligastridae is a family of earthworms native to South and Eastern Asia, containing around 200 species and five genera.

Cylicobdellidae is a family of leeches belonging to the order Arhynchobdellida from the Americas.

Fabriciidae is a family of annelid worm in the class Polychaeta.

Parergodrilidae is an enigmatic family of polychaetes with only two genera, Stygocapitella, which lives on the coast; and Parergodrilus, which is terrestrial.

Xerobdellidae are a small family of jawed leeches in the order Arhynchobdellida. Xerobdellidae have three jaws and five pairs of eyes, the fourth and fifth being separated by one or two eyeless segments. The genera placed herein occur in Chile (Mesobdella), Europe (Xerobdella) and Diestecostoma is found in Central and northern South America. This peculiar distribution strongly suggests they are a relict Pangaean group, which had already been present by the start of the Jurassic 250 million years ago.

Goniadidae is a family of marine worms within the Polychaeta. Goniadids have long, slender bodies and can grow up to 260mm in length, although most are less than 50mm long. Goniadids have an eversible proboscis with a circlet of chitinous jaws around the terminal end.

Pholoidae is a family of polychaetes belonging to the order Phyllodocida.

Sternaspidae, commonly known as mud owls, are a family of marine polychaete worms with short swollen bodies. They have a global distribution and live buried in soft sediment at depths varying from the intertidal zone to .

Lacydoniidae is a family of polychaetes belonging to the order Phyllodocida.

The Nerillidae are a family of invertebrates containing these genera: Meganerilla Mesonerilla Nerilla Nerillidium Nerillidopsis Paranerilla Psammoriedlia Thalassochaetus Troglochaetus

Lopadorrhynchidae is a family of polychaete worms.

Thalassematidae is a family of spoonworms in the suborder Echiurida.

Urechidae (commonly known as "fat innkeeper" or "penis fish") is a family of spoonworms in the subclass Echiura. The only genus in the family is Urechis, which has four species.

Semiscolecidae is a family of annelids belonging to the order Arhynchobdellida.

Salifidae is a family of annelids belonging to the order Arhynchobdellida. Like all leeches, salifids are hermaphrodites and most are very good swimmers. Salifids live in aerated streams in Africa, Asia, and some Pacific islands. They are macrophagous carnivores, rather than haematophagous (blood-sucking), and swallow their prey whole. Prey animals include mainly chironomid larvae. Salifids have pharyngeal stylets rather than the jaws or probosces present in other leeches.

Praobdellidae is a family of hematophagous leeches which live on the mucous membranes of mammals and sometimes invertebrates. These are internal parasites that enter the body through natural orifices (usually nasal cavities and pharynx, more rarely the lower respiratory tract, anus, urethra, and vagina), and cause hirudiniases.

Gastrostomobdellidae is a family of annelids belonging to the order Arhynchobdellida.

Phascolionidae is a family of peanut worms.

Haemopidae is a family of leeches belonging to the order Arhynchobdellida.

Ichthyotomidae is a family of polychaetes belonging to the order Phyllodocida.

Hartmaniellidae is a family of polychaetes belonging to the order Eunicida.

Aberrantidae is a family of annelids belonging to the order Spionida.

Apistobranchidae is a family of chaetopteriform annelids.

Paralacydoniidae is a family of polychaetes belonging to the order Phyllodocida.

REDIRECT Americobdella

The Saccocirridae are small interstitial polychaetes common in coarse sand on reflective, surf beaches, usually within the zone of retention. Saccocirridae have a worldwide distribution and many more species likely remain to be described. These polychates are usually between in length and 500 μm wide. They have reduced parapodia and are considered a true interstitial species, incapable of burrowing through finer sediments.

Nautiliniellidae is a family of polychaetes belonging to the order Phyllodocida.

Ramphoprionidae is a family of polychaete worms known from the Ordovician and Silurian periods.

Pontodoridae is a family of polychaetes belonging to the order Phyllodocida.