World Register of Marine Species (WoRMS)
Cyrena intermedea F. B. Meek & Hayden, 1856
MolluscaBase eds. (2026). MolluscaBase. Cyrena intermedea F. B. Meek & Hayden, 1856&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1502893 on 2026-08-28
Meek, F.B.; Hayden, F.V. (1856). Descriptions of New Species of Acephala and Gastropoda, from the Tertiary formations of Nebraska Territory, with some general remarks on the Geology of the country about the sources of the Missouri River. Proceedings of the Academy of Natural Sciences of Philadelphia. 8: 111-126.