Echiuridae is a
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
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 Monro Monro ...
. 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 living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
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 speciali ...
recognises the following
species
In biology, a species is the basic unit of Taxonomy (biology), 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 ...
in the genus:-
[
* '' Echiurus abyssalis'' Skorikow, 1906
* '' Echiurus antarcticus'' Spengel, 1912
* '' Echiurus echiurus'' (Pallas, 1766)
* '' Echiurus sitchaensis'' Brandt, 1835
]
References
{{Taxonbar, from=Q2809389
Echiurans