Koken E. (1897). Die Gastropoden des baltischen Untersilurs. <em>Bulletin de l'Académie Impériale des Sciences de St Petersburg.</em> 7(2): 97–214., available online athttps://www.biodiversitylibrary.org/page/30245854 page(s): 138, fig. 11 [details]
MolluscaBase eds. (2024). MolluscaBase. Cyrtolites grandis Koken, 1897 †. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1715124 on 2024-09-06
Marine Species Traits editorial board (2024). Marine Species Traits. Cyrtolites grandis Koken, 1897 †. Accessed at: https://www.marinespecies.org/traits./aphia.php?p=taxdetails&id=1715124 on 2024-09-06
original descriptionKoken E. (1897). Die Gastropoden des baltischen Untersilurs. <em>Bulletin de l'Académie Impériale des Sciences de St Petersburg.</em> 7(2): 97–214., available online athttps://www.biodiversitylibrary.org/page/30245854 page(s): 138, fig. 11 [details]