Cooper, J. G. (1894). Catalogue of Californian Fossils (parts II, III, IV, and V). <em>California State Mining Bureau Bulletin.</em> 4: 1-65, 6 pls.[details]
MolluscaBase eds. (2024). MolluscaBase. Cryptochorda (Cryptochorda) californica (J. G. Cooper, 1894) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1471885 on 2024-08-06
original descriptionCooper, J. G. (1894). Catalogue of Californian Fossils (parts II, III, IV, and V). <em>California State Mining Bureau Bulletin.</em> 4: 1-65, 6 pls.[details]