The Tianjialou Formation is a Lower Cretaceous geologic formation in China. Its lithology is described as consisting "chiefly of a sequence of fine clastic lacustrine deposits, including feldspar sandstone, siltstone and mudstone". Dinosaur tracks have been discovered in the formation.
Two types of sauropod tracks, resembling Parabrontopodus and Brontopodus respectively, are known. There are also tetradactyl ornithischian tracks, possibly left by Psittacosaurus.