Echiura

thumb|right|120px|Echiurus

marine worm

Echiuridae is a family of spoon worms in the suborder Echiurida. It is a monotypic family, the only genus being Echiurus. These worms burrow into soft sediment on the seabed.

genus of annelids

species of annelid

species of annelid

Bonelliidae is a family of marine worms (Subclass Echiura, of the class Polychaeta, in the phylum Annelida) noted for being sexually dimorphic, with males being tiny in comparison with the females. They occupy burrows in the seabed in many parts of the world's oceans, often at great depths.

Echiuroidea is an order of annelids in the class Polychaeta.

species of annelid

Listriolobus is a genus of echiurans belonging to the family Echiuridae.

Ochetostoma is a genus of echiurans belonging to the family Thalassematidae.

Thalassema is a genus of spoonworms in the subclass Echiura.

species of annelid

species of annelid

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.

Thalassematidae is a family of spoonworms in the suborder Echiurida.

species of annelid

Maxmuelleria is a genus of echiurans belonging to the family Bonelliidae.

Pseudobonellia is a genus of echiurans belonging to the family Bonelliidae.

species of annelid

Anelassorhynchus is a genus of spoonworms in the subclass Echiura.

species of annelid

Metabonellia is a genus of marine spoon worms in the family Bonelliidae. It is a monotypic genus and Metabonellia haswelli is the only species. It is commonly known as the green spoon worm and is found in shallow waters around Australia.

species of annelid

Echiurida is a suborder of the order Echiuroidea, an order of polychaete worms.

species of annelid