Parergodrilidae is an enigmatic family of

polychaete Polychaeta () is a paraphyletic class (biology), class of generally marine invertebrate, marine annelid worms, common name, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that ...

s with only two genera, one living on the coast, the other terrestrial. They share much in common with the

clitellates The Clitellata are a class (biology), class of annelid worms, characterized by having a clitellum - the 'collar' that forms a reproductive cocoon during part of their life cycles. The clitellates comprise around 8,000 species. Unlike the class o ...

, but molecular data place them with Questa and

Orbiniidae Orbiniidae is a family of polychaete worms. Orbiniids are mostly unselective deposit feeders on marine detritus. They can be found from the neritic zone to abyssal depths. The family was revised in 1957 by Hartman and some further revisions w ...

References

Polychaetes {{annelid-stub