(ofPlanorbis (Gyrorbis) angulatus Clessin, 1877 †)Clessin, S. (1877). Die tertiären Binnenconchylien von Undorf. <em>Correspondenz-Blatt des zoologisch-mineralogischen Vereines in Regensburg.</em> 31 (3), 34-41. page(s): 40 [details]
MolluscaBase eds. (2025). MolluscaBase. Anisus angulatus (Clessin, 1877) †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=822874 on 2025-05-12
Marine Species Traits editorial board (2025). Marine Species Traits. Anisus angulatus (Clessin, 1877) †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=822874 on 2025-05-12
original description(ofPlanorbis (Gyrorbis) angulatus Clessin, 1877 †)Clessin, S. (1877). Die tertiären Binnenconchylien von Undorf. <em>Correspondenz-Blatt des zoologisch-mineralogischen Vereines in Regensburg.</em> 31 (3), 34-41. page(s): 40 [details]
additional sourceClessin, S. (1885). Die Conchylien der Obermiocaenen Ablagerungen von Undorf. <em>Malakozoologische Blätter, Neue Folge.</em> 7 (2): 71-95., available online athttps://www.biodiversitylibrary.org/page/35594668 page(s): 91 [details]