Yochelson E.L. (1958). Some Lower Ordovician monoplacophoran mollusks from Missouri. <em>Journal of the Washington Academy of Sciences.</em> 48(1): 8-14., available online athttps://www.biodiversitylibrary.org/page/39744180 page(s): 8 [details] Available for editors [request]
MolluscaBase eds. (2024). MolluscaBase. Cyrtonellopsis Yochelson, 1958 †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1701388 on 2024-06-28
original descriptionYochelson E.L. (1958). Some Lower Ordovician monoplacophoran mollusks from Missouri. <em>Journal of the Washington Academy of Sciences.</em> 48(1): 8-14., available online athttps://www.biodiversitylibrary.org/page/39744180 page(s): 8 [details] Available for editors [request]