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 marine annelid worms, that have secondarily lost their segmentation. Sipuncula was once considered a phylum of unsegmented ...

.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 Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a class containing about 162 species of marine annelid worms, that have secondarily lost their segmentat ...

, 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 (aquatic environment), the earthy material that exi ...

but some live in the empty shells of

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

. 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 marine annelid worms, that have secondarily lost their segmentation. Sipuncula was once considered a phylum of unsegmented ...

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

Golfingiidae Golfingiidae is a family of peanut worms. Species ''Golfingia'' * ''Golfingia anderssoni'' (Théel, 1911) * ''Golfingia birsteini'' Murina 1973 * ''Golfingia capensis'' (Teuscher, 1874) * ''Golfingia elongata'' (Keferstein, 1862) * ''Golfingia i ...

* Phascolionidae *

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) * ...

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 Annelid orders {{Annelid-stub