Taxon - Links and literature
species
Portlandia arctica Gray, 1824
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Portlandia arctica Gray, 1824]Data retrieved on: 23 November 2013
Paleobiology Database [86131]
Paleobiology Database [https://paleobiodb.org/] [as Portlandia arctica (Gray, 1824)]
Data retrieved on: 28 January 2018