World Register of Marine Species (WoRMS)
Tetrastemma elongatum (Stephenson, 1911)
Norenburg, J.; Chernyshev, A.; Kajihara, H.; Maslakova, S. (2026). World Nemertea Database. Tetrastemma elongatum (Stephenson, 1911). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1783055 on 2026-08-02
Stephenson, J. (1911). The Nemertines of Millport and its vicinity. Transactions of the Royal Society of Edinburgh, 48: 1-29