M 52 Lettenkohlen sandstein.
| 分類 | Rocks: |
| 年代 | Mesozoic Triassic Upper Trias: Lower Keuper: |
| 産地 | Kornwestheim, Wuertemberg. |
| 文献 | Department of Science, Tokio-Daigaku, 1881: Triassic formation. Catalogue of Histrical Geology. Mesozoic., pp. 1–10. Department of Science, Tokio-Daigaku. |
