Conrad, T. A. (1843). Descriptions of nineteen species of Tertiary fossils of Virginia and North Carolina. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 1: 323-329., available online athttps://www.biodiversitylibrary.org/page/1779423[details]
MolluscaBase eds. (2021). MolluscaBase. Solen directus Conrad, 1843. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://marbef.org/data/aphia.php?p=taxdetails&id=152837 on 2024-03-28
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species. Solen directus Conrad, 1843. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=152837 on 2024-03-28
original descriptionConrad, T. A. (1843). Descriptions of nineteen species of Tertiary fossils of Virginia and North Carolina. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 1: 323-329., available online athttps://www.biodiversitylibrary.org/page/1779423[details]