World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Caudofoveata. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=151365 on 2026-08-29
Boettger, C. R. (1956). Beiträge zur Systematik der Urmollusken (Amphineura). Zoologischer Anzeiger, Supplement. 19: 223-256.