Bibliography
Source: Catalogue of Life
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Frederiks, G. N. (1924). Paleontologicheskie etyudy. 2 verkhnekamennougol’nykh spiriferidakh Urala (Palaeontological studies - 2. On Upper Carboniferous spiriferids of the Urals). Izv. Geol. Kom., 38. https://www.marinespecies.org/aphia.php?p=sourcedetails&id=465941 |
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