Stewart, R. B. (1930). Gabb's California Cretaceous and Tertiary type lamellibranchs. <em>Academy of Natural Sciences of Philadelphia, Special Publications.</em> 3: 1-314, pls 1-17., available online athttps://babel.hathitrust.org/cgi/pt?id=uc1.31822011360963&seq=7 page(s): 186 [details]
MolluscaBase eds. (2024). MolluscaBase. Eophysema R. B. Stewart, 1930 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=828336 on 2024-04-19
original descriptionStewart, R. B. (1930). Gabb's California Cretaceous and Tertiary type lamellibranchs. <em>Academy of Natural Sciences of Philadelphia, Special Publications.</em> 3: 1-314, pls 1-17., available online athttps://babel.hathitrust.org/cgi/pt?id=uc1.31822011360963&seq=7 page(s): 186 [details]