MolluscaBase eds. (2024). MolluscaBase.
Portlandia frigida (Torell, 1859). Accessed through: Glover, A.G.; Higgs, N.; Horton, T. (2024) World Register of Deep-Sea species (WoRDSS) at: https://marinespecies.org/Deepsea/aphia.php?p=taxdetails&id=254649 on 2024-03-28
Glover, A.G.; Higgs, N.; Horton, T. (2024). World Register of Deep-Sea species (WoRDSS).
Portlandia frigida (Torell, 1859). Accessed at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=254649 on 2024-03-28