Modell, H. (1950). Tertiäre Najaden IV. <em>Archiv für Molluskenkunde.</em> 79(1/3): 25-36. page(s): 28, pl. 6, fig. 12 [details] Available for editors
MolluscaBase eds. (2021). MolluscaBase. Unio ullerichi Modell, 1950 †. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: http://marinespecies.org/traits/aphia.php?p=taxdetails&id=1514930 on 2025-09-11
Marine Species Traits editorial board (2025). Marine Species Traits. Unio ullerichi Modell, 1950 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1514930 on 2025-09-11
original descriptionModell, H. (1950). Tertiäre Najaden IV. <em>Archiv für Molluskenkunde.</em> 79(1/3): 25-36. page(s): 28, pl. 6, fig. 12 [details] Available for editors