''Sipunculus'' is a genus of

worm Worms are many different distantly related bilateria, bilateral animals that typically have a long cylindrical tube-like body, no limb (anatomy), limbs, and usually no eyes. Worms vary in size from microscopic to over in length for marine ...

s belonging to the family

Sipunculidae Sipunculidae is a family of peanut worms. Species ''Phascolopsis'' * '' Phascolopsis gouldii'' (De Pourtalés, 1851) ''Siphonomecus'' * '' Siphonomecus multicinctus'' Fisher 1947 ''Siphonosoma'' * '' Siphonosoma arcassonense'' (Cuenot, 1902) * ...

Taxonomy

is a variant spelling of the

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

("little tube"), a

diminutive A diminutive is a word obtained by modifying a root word to convey a slighter degree of its root meaning, either to convey the smallness of the object or quality named, or to convey a sense of intimacy or endearment, and sometimes to belittle s ...

of from

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

(''síphōn'', "

tube Tube or tubes may refer to: * ''Tube'' (2003 film), a 2003 Korean film * "Tubes" (Peter Dale), performer on the Soccer AM television show * Tube (band), a Japanese rock band * Tube & Berger, the alias of dance/electronica producers Arndt Rör ...

pipe Pipe(s), PIPE(S) or piping may refer to: Objects * Pipe (fluid conveyance), a hollow cylinder following certain dimension rules ** Piping, the use of pipes in industry * Smoking pipe ** Tobacco pipe * Half-pipe and quarter pipe, semi-circular ...

"). was used for fossilized worm-shaped organisms like by the

Welsh Welsh may refer to: Related to Wales * Welsh, of or about Wales * Welsh language, spoken in Wales * Welsh people, an ethnic group native to Wales Places * Welsh, Arkansas, U.S. * Welsh, Louisiana, U.S. * Welsh, Ohio, U.S. * Welsh Basin, during t ...

naturalist

Edward Lhuyd Edward Lhuyd (1660– 30 June 1709), also known as Edward Lhwyd and by other spellings, was a Welsh scientist, geographer, historian and antiquary. He was the second Keeper of the University of Oxford's Ashmolean Museum, and published the firs ...

in 1699. In the next century, the

Swedish Swedish or ' may refer to: Anything from or related to Sweden, a country in Northern Europe. Or, specifically: * Swedish language, a North Germanic language spoken primarily in Sweden and Finland ** Swedish alphabet, the official alphabet used by ...

naturalist

Carl Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...

used the

scientific name In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

for a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of worms in his 1766 . In 1814, the

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zoologist Zoology ( , ) is the scientific study of animals. Its studies include the structure, embryology, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems. Zoology is one ...

Constantine Samuel Rafinesque Constantine Samuel Rafinesque-Schmaltz (; 22 October 178318 September 1840) was a French early 19th-century polymath born near Constantinople in the Ottoman Empire and self-educated in France. He traveled as a young man in the United States, ult ...

used the

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form to distinguish the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

including ; this was later elevated to the

class Class, Classes, or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used d ...

, the family being renamed and the species reorganized into different genera.

Distribution

The genus has

cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en ...

Species

Species included in Sipunculus are: *'' Sipunculus angasoides'' *'' Sipunculus clavatus'' *'' Sipunculus corallicolus'' *'' Sipunculus echinorhynchus'' *'' Sipunculus gulfus'' *'' Sipunculus indicus'' *'' Sipunculus lomonossovi'' *'' Sipunculus longipapillosus'' *'' Sipunculus macrorhynchus'' *'' Sipunculus marcusi'' *'' Sipunculus microrhynchus'' *'' Sipunculus mundanus'' *'' Sipunculus norvegicus'' *''

Sipunculus nudus ''Sipunculus nudus'' is a cosmopolitan species of unsegmented marine worm of the class Sipuncula, also known as peanut worms. Description As in all peanut worms, the body of ''S. nudus'' consists of a sac-like portion called the trunk and an ever ...

'' *'' Sipunculus phalloides'' *'' Sipunculus polymyotus'' *'' Sipunculus robustus'' *'' Sipunculus rubens'' *'' Sipunculus rufofimbriatus'' *'' Sipunculus saccatus'' *'' Sipunculus thailandicus'' *'' Sipunculus zenkevitchi''

References

{{Taxonbar, from=Q2342297 Sipunculans