| Lufeng Formation | |
|---|---|
| Stratigraphic range: Hettangian-Pliensbachian ~ | |
| Type | Geological formation |
| Sub-units | Shawan & Zhangjia'ao Members |
| Underlies | Chuanjie Formation |
| Overlies | Precambrian slate basement |
| Thickness | over 300 metres (980 ft) |
| Lithology | |
| Primary | Siltstone |
| Other | Sandstone |
| Location | |
| Coordinates | 25°00′N 102°06′E / 25.0°N 102.1°E |
| Approximate paleocoordinates | 34°18′N 104°36′E / 34.3°N 104.6°E |
| Region | Yunnan |
| Country | China |
| Extent | Yunnan Basin |
  Lufeng Formation (China)  Lufeng Formation (Yunnan) | |
The Lufeng Formation (formerly Lower Lufeng Series) is a Lower Jurassic sedimentary rock formation found in Yunnan, China. It has two units: the lower Dull Purplish Beds/Shawan Member are of Hettangian age, and Dark Red Beds/Zhangjia'ao Member are of Sinemurian age.[1] It is known for its fossils of early dinosaurs. The Dull Purplish Beds have yielded the possible therizinosaur Eshanosaurus, the possible theropod Lukousaurus, and the "prosauropods" "Gyposaurus" sinensis, Lufengosaurus, Jingshanosaurus, and Yunnanosaurus. Dinosaurs discovered in the Dark Red Beds include the theropod Sinosaurus triassicus, the "prosauropods" "Gyposaurus", Lufengosaurus, and Yunnanosaurus, indeterminate remains of sauropods, and the early armored dinosaurs Bienosaurus and Tatisaurus.[2]