Semper O. (1861). Catalog einer Sammlung Petrefacten des Sternberger Gesteins. <em>Paläontologische Untersuchten. Neubrandbenburg.</em> 100-160. page(s): 157 [details]
MolluscaBase eds. (2024). MolluscaBase. Arca speyeri O. Semper, 1861 †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1658946 on 2024-05-01
original descriptionSemper O. (1861). Catalog einer Sammlung Petrefacten des Sternberger Gesteins. <em>Paläontologische Untersuchten. Neubrandbenburg.</em> 100-160. page(s): 157 [details]
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