Oligochaeta is a subclass of animals in the phylum Annelida, which is made up of many types of aquatic and terrestrial worms, including all of the various earthworms. Specifically, oligochaetes comprise the terrestrial megadrile earthworms, and freshwater or semiterrestrial microdrile forms, including the tubificids, pot worms and ice worms (Enchytraeidae), blackworms (Lumbriculidae) and several interstitial marine worms.
The Naididae are a family of clitellate oligochaete worms like the sludge worm, Tubifex tubifex. They are key components of the benthic communities of many freshwater and marine ecosystems. In freshwater aquaria they may be referred to as detritus worms.
Grania is a genus of marine annelid worms in the class Clitellata. They are found at many depths in sands throughout the world. They are generally about 2 centimetres (0.79 in) in length and mostly colorless or white, though Grania colorata, a recently discovered species found in the Great Barrier Reef, is green.
Inanidrilus falcifer is a species of annelid worm. It is known from subtidal silty coral sands on the Caribbean side of Barbados, in the Atlantic Ocean.
Inanidrilus mexicanus is a species of annelid worm. It is known from the Gulf of Mexico on the west coast of Florida.
Inanidrilus is a genus of marine annelid worms, first described by Christer Erséus in 1979. They are gutless and live in the interstitial of tropical and subtropical seas.
Limnodriloides is a genus of clitellate oligochaete worms.
Smithsonidrilus is a genus of clitellate oligochaete worms.
Olavius is a genus of clitellate oligochaete worms, first described by Christer Erséus in 1984.
Phallodrilinae is a subfamily of clitellate oligochaete worms.
Coralliodrilus is a genus of clitellate oligochaete worms.
Ainudrilus is a genus of clitellate oligochaete worms.
Bathydrilus is a genus of clitellate oligochaete worms.
Tubificoides is a genus of annelids belonging to the family Naididae.
Thalassodrilus is a genus of annelids belonging to the family Naididae.
Gianius is a genus of annelids belonging to the family Naididae.
Aktedrilus is a genus of annelids belonging to the family Naididae.
Heterodrilus is a genus of annelids belonging to the family Naididae.
Heronidrilus is a genus of annelids belonging to the family Naididae, first described by Christer Erséus and Barrie Jamieson in 1981.
Thalassodrilides is a genus of annelids belonging to the family Naididae.
