M 417 Sepula subangularis, Muenst.
| 分類 | Animals: Annulosa: Anarthropoda: Annelida: |
| 年代 | Mesozoic Jurassic Inferior Oolite: Great Oolite: |
| 産地 | Ranville, Normandy. |
| 文献 | Department of Science, Tokio-Daigaku, 1881: Jurassic formation. Catalogue of Histrical Geology. Mesozoic., pp. 1–38. Department of Science, Tokio-Daigaku. |
