Sykes, E. R. (1925). On the mollusca procured during the "Porcupine" expeditions 1869-70. Supplemental notes, part V. <em>Proceedings of the Malacological Society of London.</em> 16: 181-193. page(s): 190, pl. 9 fig. 4, 4a [details] Available for editors
Type locality contained in Portuguese Exclusive Economic Zone
type locality contained in Portuguese Exclusive Economic Zone [details]
MolluscaBase eds. (2025). MolluscaBase. Cithna marshalli Sykes, 1925. Accessed through: Glover, A.G.; Higgs, N.; Horton, T. (2025) World Register of Deep-Sea species (WoRDSS) at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=524263 on 2026-09-09
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS). Cithna marshalli Sykes, 1925. Accessed at: https://marinespecies.org/DeepSea/aphia.php?p=taxdetails&id=524263 on 2026-09-09
original descriptionSykes, E. R. (1925). On the mollusca procured during the "Porcupine" expeditions 1869-70. Supplemental notes, part V. <em>Proceedings of the Malacological Society of London.</em> 16: 181-193. page(s): 190, pl. 9 fig. 4, 4a [details] Available for editors
context source (Deepsea)Gofas, S.; Luque, Á. A.; Templado, J.; Salas, C. (2017). A national checklist of marine Mollusca in Spanish waters. <em>Scientia Marina.</em> 81(2) : 241-254, and supplementary online material., available online athttps://doi.org/10.3989/scimar.04543.21a[details]
Present Inaccurate Introduced: alien Containing type locality