Golfingiida, also known as the Golfingiiformes, is an order of

peanut worms The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of unsegmented marine annelid worms. The name ''Sipuncula'' is from the genus name '' Sipunculus'', and comes from the Latin ...

.Gibbs, P.E. (1977): ''British sipunculans''. Academic Press. London. 35p. Ditadi, A.S.F. & Migotto, A.E. (1982): ''O Filo Sipuncula''. Concelho Nacional de Desemvolvimento Cientifico e Tecnologico CNPq Brasilia. 43p.Cutler, Edward B. (1994): ''The Sipuncula: their systematic, biology and evolution''. Cornell University Press. 406p The tentacles form a circle around the mouth, while those of the sister taxon,

Phascolosomatidea Phascolosomatidea is a subclass of the class Sipuncula, the peanut worm The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of unsegmented marine annelid worms. The name ''S ...

, are only found above the mouth. Most species burrow in the

substrate Substrate may refer to: Physical layers *Substrate (biology), the natural environment in which an organism lives, or the surface or medium on which an organism grows or is attached ** Substrate (locomotion), the surface over which an organism lo ...

but some live in the empty shells of

gastropods The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. ...

. It is an order of the class

Sipuncula The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of unsegmented marine annelid worms. The name ''Sipuncula'' is from the genus name '' Sipunculus'', and comes from the Latin ...

(previously considered a phylum), and contains the following families: * Golfingiidae *

Phascolionidae ''Phascolionidae'' is a family of peanut worms. Species ''Onchnesoma'' * ''Onchnesoma intermedium'' Murina 1976 * ''Onchnesoma magnibathum'' Cutler 1969 * ''Onchnesoma squamatum'' (Koren and Danielssen, 1875) * ''Onchnesoma steenstrupii ''On ...

* Sipunculidae Rafinesque, 1814 * ThemistidaeCutler, Edward B. & Cutler, Norma J. (1988): A revision of the genus ''Themistes''. (Sipuncula). ''Proceedings of the Biological Society of Washington'' 101(4):741-766.

References

External links

Tree of Life Web Project
Sipunculans Protostome orders {{Protostome-stub