World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Nipponotrophon echinus (Dall, 1918). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=399211 on 2026-08-01
Dall, W. H. (1918). Notes on Chrysodomus and other mollusks from the North Pacific Ocean. Proceedings of the United States National Museum. 54 (2234): 207-234.