Gabb, W. M. (1866-1869). Geological Survey of California. Palaeontology. Volume II. Cretaceous and Tertiary fossils. <em>Palaeontology. Volume II.</em> 1-38, pls. 1-13 [Feb 1866]; 39-299, pls. 14-36 [1869?]; i-xiv [1869]., available online athttps://www.biodiversitylibrary.org/page/2066671 page(s): 50 [details]
MolluscaBase eds. (2024). MolluscaBase. Cancellaria gracilior P. P. Carpenter, 1869. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=849162 on 2024-05-01