original description
Gabb, W. M. (1864). Description of the Cretaceous fossils. <em>In: Meek, F. B. and Gabb, W. M. Geological Survey of California, Palaeontology of California.</em> 1: 55-243, pls. 9-32., available online at https://biodiversitylibrary.org/page/2062749
page(s): 170 [details]
source of synonymy
Cox, L. R. et al. (1969). Part N: Mollusca 6, Bivalvia. In: Moore, R.C. (Ed.) Treatise on Invertebrate Paleontology. Geological Society of America and University of Kansas Press, Lawrence, Kansas, 2 vol., 951 pp.
page(s): 668 [details]
From editor or global species database
Synonymy Synonymized with Polymesoda Rafinesque, 1820 by Cox et al. (1969), but listed as separate genus (the replacement name Diodus) in Stewart (1930) and Groves & Squires (2018). [details]