World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Cyrena acuta Ludwig, 1861&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1561709 on 2026-08-29
Ludwig, R. (1861). Süsswasser-Bivalven aus der Wetterauer Tertiär-Formation. Palaeontographica. 8(6): 195-198.