Echiuridae is a

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

of spoon worms in the suborder

Echiurida Echiurida is a suborder of the order Echiuroidea, an order of polychaete worms. Families The following families are classified within the suborder: *Echiuridae Quatrefages, 1847 *Thalassematidae Forbes & Goodsir, 1841 *Urechidae Urechidae ...

. It is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

family, the only

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

being ''Echiurus''. These worms burrow into soft sediment on the seabed.

Species

The

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialist ...

recognises the following

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

in the genus:- * '' Echiurus abyssalis'' Skorikow, 1906 * '' Echiurus antarcticus'' Spengel, 1912 * ''

Echiurus echiurus ''Echiurus echiurus'' is a species of spoon worm in the family Echiuridae. It is found in the North Atlantic Ocean and a subspecies is found in Alaska. It burrows into soft sediment and under boulders and stones in muddy places. Description Th ...

'' (Pallas, 1766) * '' Echiurus sitchaensis'' Brandt, 1835

References

{{Taxonbar, from=Q2809389 Echiurans