Phascolosomatiformes

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Authors	Title	Year of Publication
A.C. Stephen; S.J. Edmonds	The phyla Sipuncula and Echiura	1972
M.E. Rice; A.C. Stephen	The type specimens of Sipuncula and Echiura described by J.E. Gray and W. Baird in the collections of the British Museum of Natural History	1970
W.B. Baird	Monograph on the species of worms belonging to the subclass Gephyreae	1868
E. Grube; A.S. Oersted	Annulata Oerstediana	1858