MolluscaBase (2018). Opalia H. Adams & A. Adams, 1853. Accessed through: (Eds) (2018) Register of Antarctic Species at: http://ras.biodiversity.aq/aphia.php?p=taxdetails&id=137948 on 2019-12-01
(Eds) (2019). Register of Antarctic Species. Opalia H. Adams & A. Adams, 1853. Accessed at: http://ras.biodiversity.aq/aphia.php?p=taxdetails&id=137948 on 2019-12-01