Pa 531 Retzia vera.
分類 | Animals: Mollusca: Molluscoida: Brachiopoda:Articulata: Spiriferidae: |
年代 | Paleozoic Carboniferous Lower Carboniferous: |
産地 | Chester, Illinois. |
文献 | Department of Science, Tokio-Daigaku, 1881: Catalogue of Palaeontological Specimens. Middle Case., pp. 1–46. Department of Science, Tokio-Daigaku. |