World Register of Marine Species (WoRMS)
Lagena unguis Heron-Allen & Earland, 1913
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Lagena unguis Heron-Allen & Earland, 1913. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=479071 on 2026-08-01
Heron-Allen, E.; Earland, A. (1913). Clare Island Survey: Part 64. Foraminifera. Proceedings of the Royal Irish Academy. 31 sect. 3: 1-188.