Flower, R. H. (1946). Ordovician cephalopods of the Cincinnati region. <em>Bulletin of American Paleontology.</em> 29(116): 1-556., available online athttps://www.biodiversitylibrary.org/page/10650257 page(s): 264, pl. 39, figs 4-5, 8-9 [details]
MolluscaBase eds. (2025). MolluscaBase. Oncoceras madisonense Flower, 1946 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1760465 on 2025-05-23
Marine Species Traits editorial board (2025). Marine Species Traits. Oncoceras madisonense Flower, 1946 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1760465 on 2025-05-23
original descriptionFlower, R. H. (1946). Ordovician cephalopods of the Cincinnati region. <em>Bulletin of American Paleontology.</em> 29(116): 1-556., available online athttps://www.biodiversitylibrary.org/page/10650257 page(s): 264, pl. 39, figs 4-5, 8-9 [details]
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