Tianjialou Formation
The Tianjialou Formation is a Lower Cretaceous rock layer in Shandong, China. It belongs to the Dasheng Group and lies above the Malanggou Formation. The rocks are mainly fine clastic sediments from ancient lakes, including feldspar sandstone, siltstone, and mudstone. Dinosaur tracks have been found here, with two sauropod track types similar to Parabrontopodus and Brontopodus, and four-toed ornithischian tracks probably made by Psittacosaurus.
This page was last edited on 2 February 2026, at 05:55 (CET).