Emig, C.C., Roldán, C. & Viéitez, J.M. (comps.) 2001. Phoronida. In M.J. Costello, C.S. Emblow & R. White (eds.), European Register of Marine Species. A check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines naturels 50: 324-325.