| Tuchengzi Formation | |
|---|---|
| Stratigraphic range: Tithonian-Berriasian ~[1] | |
| Type | Geological formation |
| Underlies | Zhangjiakou Formation |
| Overlies | Tiaojishan Formation |
| Thickness | 870–2,900 metres (2,850–9,510 ft)[2] |
| Lithology | |
| Primary | Shale |
| Other | Sandstone, mudstone |
| Location | |
| Coordinates | 42°54′N 124°00′E / 42.9°N 124.0°E |
| Approximate paleocoordinates | 44°06′N 126°06′E / 44.1°N 126.1°E |
| Region | Beijing, Hebei, Liaoning |
| Country |  China |
| Type section | |
| Named for | Tuchengzi, Beipiao, Liaoning |
| Named by | Chao-Chi Lin |
| Year defined | 1942 |
  Tuchengzi Formation (China)  Tuchengzi Formation (Liaoning) | |
The Tuchengzi Formation (formerly known as Tucheng Conglomerate, from Chinese: 土城子; pinyin: Tǔchéngzǐ) is a geological formation in China whose strata span the Tithonian (Late Jurassic) to Berriasian (Early Cretaceous) ages.[1] Dinosaur fossils, particularly footprints, have been found from the formation.[3][4]
- ^ a b Liu Y.-Q. Kuang H.-W., Jiang X.-J., Peng N., Xu H. & Sun H.-Y. (2012). "Timing of the earliest known feathered dinosaurs and transitional pterosaurs older than the Jehol Biota." Palaeogeography, Palaeoclimatology, Palaeoecology (advance online publication).
- ^ Wang, Y.; Ken, S.; Zhang, W.; Zheng, S. (2006). "Biodiversity and palaeoclimate of the Middle Jurassic floras from the Tiaojishan Formation in western Liaoning, China". Progress in Natural Science. 16 (1): 222–230. doi:10.1080/10020070612330087.
- ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Jurassic, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 550–552. ISBN 0-520-24209-2.
- ^ Xing, Lida; Lockley, Martin G.; Du, Tianming; Zhang, Lijun; Klein, Hendrik; Romilio, Anthony; Persons, W. Scott; Wang, Kuan; Li, Zhenyu; Wan, Xiaoqiao (March 2020). "Dinosaur tracks from the Jurassic-Cretaceous boundary Tuchengzi Formation (Hebei Province, China) used as building stones in the Chengde imperial summer resort: Age, ichnology, and history". Cretaceous Research. 107: 104310. Bibcode:2020CrRes.10704310X. doi:10.1016/j.cretres.2019.104310. S2CID 210266977.