Conrad, T. A. (1869). Descriptions of Miocene, Eocene, and Cretaceous shells. <em>American Journal of Conchology.</em> 5(1): 39-45, pls. 1, 2., available online athttps://www.biodiversitylibrary.org/page/7005024 page(s): 42, pl. 1, fig. 4 [details]
MolluscaBase eds. (2026). MolluscaBase. Onustus annosus Conrad, 1869 †. Accessed through: Marine Species Traits editorial board (2026) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1885582 on 2026-10-10
Marine Species Traits editorial board (2026). Marine Species Traits. Onustus annosus Conrad, 1869 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1885582 on 2026-10-10
original descriptionConrad, T. A. (1869). Descriptions of Miocene, Eocene, and Cretaceous shells. <em>American Journal of Conchology.</em> 5(1): 39-45, pls. 1, 2., available online athttps://www.biodiversitylibrary.org/page/7005024 page(s): 42, pl. 1, fig. 4 [details]
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