MolluscaBase eds. (2024). MolluscaBase. Trigonostoma umbilicare (Brocchi, 1814) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1597390 on 2024-05-01
basis of recordVan Dingenen, F.; Ceulemans, L.; Landau, B. M. (2017). The lower Pliocene gastropods of Le Pigeon Blanc (Loire-Atlantique, Northwest France), 4. Neogastropoda (in part). <em>Cainozoic Research.</em> 17(1): 23-61.[details] Available for editors [request]