Descrição original: Guppy, R. J. L. & Dall, W. H. (1896). Descriptions of Tertiary fossils from the Antillean region. Proceedings of the United States National Museum. 19: 303–331, pls 27–30. (30 December 1896)., available online at https://www.biodiversitylibrary.org/page/7295135page(s): 306, pl. 27 fig. 6