| Abstract: | A locality yielding middle Tertiary mammalian fossils was discovered by a group of students in 1986. The locality is situated 1 km south of the railway station of Lanzhou, the capital of Gansu Province. It is on the northern slope of the Gaolan mountain, which is constituted basically by continental red beds capped by thick layer of loess. The red beds consists mainly of dark red gypsiferous claystone and siltstone, intercalated with comparatively thin layers of pale-yellow sandstones. The fossils were found in the upper part of the section which is almost 400m thick (fig. 1). From points of view of both vertebrate paleontology and biostratigraphy, the discovery is of great importance, and worthy of describing as early as possible. |
