additional sourceMurina, Vantsetti. List of Echiura.[details]
new combination referenceFisher, W. K. (1946). Echiuroid worms of the North Pacific Ocean. <em>Proceedings of the United States National Museum.</em> 96: 215–292, plates 20–37., available online athttps://www.biodiversitylibrary.org/page/7311441[details]