M 34 Gervillia socialis. Desh
| 分類 | Animals: Mollusca: Mollusca Proper: Conchifera: |
| 年代 | Mesozoic Triassic Lower Trias: Muschelkalk: |
| 産地 | Erkerode near Braunschweig. |
| 文献 | Department of Science, Tokio-Daigaku, 1881: Triassic formation. Catalogue of Histrical Geology. Mesozoic., pp. 1–10. Department of Science, Tokio-Daigaku. |
