Golfingiida, also known as the Golfingiiformes, is an order of peanut worms.[1][2][3][4] The tentacles form a circle around the mouth, while those of the sister taxon, Phascolosomatidea, are only found above the mouth. Most species burrow in the substrate but some live in the empty shells of gastropods.[5] It is an order of the class Sipuncula (previously considered a phylum), and contains the following families:[6]
^Cutler, Edward B., Cutler, Norma J. & Gibbs, Peter E. (1985): A revision of the Golfingia subgenera Golfingiela, Stephen, 1964, and Siphonoides, Murina, 1967 (Sipuncula). Proceedings of the Biological Society of Washington96(4):669-674.
^Cutler, Edward B. & Cutler, Norma J. (1987): Revision of the genus Golfingia (Sipuncula: Golfingiidae). Proceedings of the Biological Society of Washington100(4):735-761.
^Cutler, Edward B. & Cutler, Norma J. (1985): A revision of the genera Phascolion Theel, and Onchnesoma Koren and Danielssen (Sipuncula). Proceedings of the Biological Society of Washington98(4):809-850.
^Cutler, Edward B. & Cutler, Norma J. (1988): A revision of the genus Themistes. (Sipuncula). Proceedings of the Biological Society of Washington101(4):741-766.