@article {889,
	title = {Sipunculus nudus Linnaeus, 1766 (Sipuncula): cosmopolitan or a group of pseudo-cryptic species? An integrated molecular and morphological approach},
	journal = {Marine Ecology},
	year = {2013},
	abstract = {Sipunculan taxonomy relies on a limited set of external morphological and internal anatomical characters. In addition, this marine group is characterized by an unusual large number of putatively cosmopolitan species. However, this {\textquoteleft}cosmopolitan{\textquoteright} status could be an artifact of their conserved morphology and the small number of unambiguous taxonomic characters available for delimiting species. Species delimitation can therefore be aided by molecular techniques. We investigated the case of the widespread and common species Sipunculus nudus Linnaeus, 1766 to determine its systematic validity. We analysed the morphology of multiple specimens of S. nudus collected from 11 localities around the world and undertook phylogenetic analyses using molecular sequence data from four genes (28S rRNA, 16S rRNA, histone H3 and cytochrome c oxidase subunit I). High levels of genetic differentiation are present between distantly related populations of the putative species S. nudus. Five distinct lineages were identified by phylogenetic analyses, three of which {\textendash} the best-represented populations {\textendash} can be distinguished morphologically. Our phylogenetic and morphological analyses thus do not favor the cosmopolitan status of S. nudus, suggesting instead that it constitutes a complex of morphologically similar but distinguishable species.},
	doi = {10.1111/maec.12104},
	author = {Kawauchi, G. Y. and Giribet, G.}
}
@article {872,
	title = {Peanut worms of the phylum Sipuncula from the Nha Trang Bay},
	journal = {Zootaxa},
	volume = {3166},
	year = {2012},
	month = {01/2012},
	pages = {18},
	chapter = {41},
	keywords = {Antillesoma, Apionsoma, Nephasoma, Phascolosoma, Siphonosoma, Sipunculus, themiste, Thysanocardia},
	issn = {1175-5326},
	author = {Andrey V. Adrianov and Anastassya S. Maioirova}
}
@book {174,
	title = {The Sipuncula. Their systematics, biology and evolution},
	year = {1994},
	pages = {453 pp},
	publisher = {Cornell University Press},
	organization = {Cornell University Press},
	address = {Ithaca, N.Y.},
	author = {Cutler, E. B.}
}
@article {185,
	title = {A revision of the genera Sipunculus and Xenosiphon (Sipuncula)},
	journal = {Zoological Journal of the Linnean Society},
	volume = {85},
	year = {1985},
	pages = {219-246},
	author = {Cutler, E. B. and Cutler, N. J.}
}
@article {545,
	title = {El problema del taxon Sipunculus gravieri (Herubel, 1904a) y la descripcion de una nueva especie para el genero Xenosiphon (Sipuncula, Sipunculidae)},
	journal = {Miscellania Zoologica, Barcelona},
	volume = {8},
	year = {1984},
	note = {He split the type specimens of Herubel{\textquoteright}s into two parts. One part he called a new species - X. absconditus. Differs from X.b. \& X.c by number of LMB{\textquoteright}S. However, according to our revision this would fall in the X.b. range now. DESC. PP 64-66 - WORMS FROM RED SEA 1 WHOLE SPECIM \& PARTS, WHOLE IS 112 MM LONG. *THERE WAS GARBAGE IN HERE FROM STEUER, 1939 / CUT 9/97},
	pages = {63-66},
	author = {Saiz Salinas, J. I.}
}
@article {218,
	title = {Intertidal sipunculans (Sipunculus) from Southern Brazil},
	journal = {Revista Brasileira de Biologia},
	volume = {42},
	number = {4},
	year = {1982},
	pages = {785-800},
	author = {Ditadi, A. S. F.}
}
@article {182,
	title = {A revision of the genus Siphonosoma (Sipuncula)},
	journal = {Proceedings of the Biological Society of Washington},
	volume = {95},
	number = {4},
	year = {1982},
	pages = {748-762},
	author = {Cutler, E. B. and Cutler, N. J.}
}
@article {235,
	title = {A revision of the systematics of Australian sipunculans (Sipuncula)},
	journal = {Records of the South Australian Museum},
	volume = {18},
	year = {1980},
	note = {this record was lost and recreated in 8/97},
	pages = {1-74},
	author = {Edmonds, S. J.}
}
@article {176,
	title = {Madagascar and Indian Ocean Sipuncula},
	journal = {Bulletin du Museum National d{\textquoteright}Histoire Naturelle, Paris},
	volume = {4e},
	number = {1},
	year = {1979},
	pages = {941-990},
	author = {Cutler, E. B. and Cutler, N. J.}
}
@article {216,
	title = {<i>Sipunculus marcusi</i> spec. nov. (Sipuncula) from Southern Brazil},
	journal = {Boletim de Zoologia, Universidade de Sao Paulo},
	volume = {1},
	year = {1976},
	pages = {81-84},
	author = {Ditadi, A. S. F.}
}
@book {625,
	title = {The phyla Sipuncula and Echiura},
	year = {1972},
	pages = {528 pp},
	publisher = {Trustees British Mus. (Nat. Hist.)},
	organization = {Trustees British Mus. (Nat. Hist.)},
	address = {London},
	author = {Stephen, A. C. and Edmonds, S. J.}
}
@article {438,
	title = {New data concerning the occurrence of abyssal sipunculids in the Atlantic Ocean},
	journal = {Zoologicheskii Zhurnal},
	volume = {47},
	number = {2},
	year = {1968},
	pages = {195-199},
	author = {Murina, V. V.}
}
@article {274,
	title = {New genera and species of Echiuridae and Sipunculid worms},
	journal = {Proceedings of the United States National Museum},
	volume = {97},
	year = {1947},
	note = {@ NOT SURE WHY GOT THIS HERE. DETAILED DESCRIPTONS OF S{\textquoteright}LUS POLYMY. \& LARVAE PLUS S. GALOP \& XENOSIPH BRANCHIATM},
	pages = {351-372},
	author = {Fisher, W. K.}
}
@article {248,
	title = {Die Gephyreen des Naturhistorischen Museums zu Hamburg},
	journal = {Abhandlungen aus dem Gebiet der Naturwissenschaften, Hamburg},
	volume = {13},
	year = {1895},
	pages = {1-24},
	author = {Fischer, W.}
}
@inbook {290,
	title = {Zoologia},
	booktitle = {Historia fisica y politica de Chile},
	year = {1849},
	note = {OLDIE FROM SAIZ? / IN SPANISH; SIP. LAGENA *N.SP. S. CYLINDRICUS ?LOST NAMES??},
	pages = {54-56},
	publisher = {Casa del autor en el Museo de Historia Natural de Santiago},
	organization = {Casa del autor en el Museo de Historia Natural de Santiago},
	address = {Paris},
	author = {Gay, C.}
}
