Pa 346 Pygaster gresslyi.
| 分類 | Animals: Annuloida: Echinodermata: Echinoidea:Echinoneidae: |
| 年代 | Mesozoic Jurassic Oxford Clay: |
| 産地 | Yonne. |
| 文献 | Department of Science, Tokio-Daigaku, 1881: Catalogue of Palaeontological Specimens. Middle Case., pp. 1–46. Department of Science, Tokio-Daigaku. |
