World Register of Marine Species (WoRMS)
Norenburg, J.; Chernyshev, A.; Kajihara, H.; Maslakova, S. (2026). World Nemertea Database. Micrura atra Punnett, 1903. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=122548 on 2026-08-29
Punnett, R. C. (1903). On the Nemerteans of Norway. Bergens Museums Aarbog, 2: 1-35