Fossilized shell of the Oligocen-modern scallop Flabellipecten... 265 KB (12,782 words) - 02:00, 1 May 2024 |
alluvial depositional environment. The thickness is around 0–910 m. Late Oligocen (Lingshui Group): sandstone, sandy shale, and shaly sandstone from fan... 10 KB (1,203 words) - 23:22, 2 June 2022 |