de Alessandri, G. (1899). Fossili cretacei della Lombardia. <em>Palaeontographia Italica.</em> 4: 169-202, pl. 14-16. Pisa., available online athttps://www.biodiversitylibrary.org/page/34280281 page(s): 185-186, pl. 14, fig. 2, pl. 15, fig. 7 [details]
original descriptionde Alessandri, G. (1899). Fossili cretacei della Lombardia. <em>Palaeontographia Italica.</em> 4: 169-202, pl. 14-16. Pisa., available online athttps://www.biodiversitylibrary.org/page/34280281 page(s): 185-186, pl. 14, fig. 2, pl. 15, fig. 7 [details]
Present Inaccurate Introduced: alien Containing type locality