| Dabeigou Formation | |
|---|---|
| Stratigraphic range: mid Valanginian-mid Hauterivian ~ | |
| Type | Geological formation |
| Unit of | Jehol Biota |
| Sub-units | Numbered Members |
| Underlies | Dadianzi & Yixian Formations |
| Overlies | Zhangjiakou Formation |
| Thickness | Varies, in Yushuxia section 220 metres (720 ft) |
| Lithology | |
| Primary | Sandstone, mudstone |
| Other | Tuffite, conglomerate, siltstone |
| Location | |
| Coordinates | 41°42′N 116°24′E / 41.7°N 116.4°E / 41.7; 116.4 |
| Approximate paleocoordinates | 43°36′N 118°30′E / 43.6°N 118.5°E / 43.6; 118.5 |
| Region | Hebei |
| Country | China |
Dabeigou Formation (China) Show map of ChinaDabeigou Formation (Hebei) Show map of Hebei | |
The Dabeigou Formation (simplified Chinese: 大北沟组; traditional Chinese: 大北溝組; pinyin: Dàběigōu zǔ) is a palaeontological formation located in Hebei, China.1 It dates from the mid Valanginian to Hauterivian age of the Cretaceous period, approximately 135 to 130 Ma.2
Fossil content
Fossils include the confuciusornithiform bird Eoconfuciusornis.3 As of 2016 this is the oldest bird with a toothless beak known, but it belongs to a very ancestral avian lineage not closely related to living birds.
- Birds
- Amphibians
- Insects
- Amplicella beipiaoensis6
- A. exquisita6
- A. shcherbakovi6
- Brachyopteryx weichangensis7
- Chresmoda multinervis8
- C. shihi8
- Coptoclava longipoda9
- Glypta qingshilaensis9
- Hebeicoris xinboensis7
- Jibeigomphus xinboensis7
- Manlayamyia dabeigouensis10
- Mesasimulium laihaigouense10
- M. laiyangensis10
- Mesolygaeus hebeiensis10
- Mesoplecia xinboensis7
- Pleciofungivora yangtianense7
- Priscotendipes mirus10
- Vitimoilus ovatus8
- Notocupes lentus9
- Amplicella sp.6
- Ichneumonidae indet.6
- Tanychorinae indet.6
References
References
- Dabeigou Formation at Fossilworks.org
- Qin et al., 2018
- Zhang et al., 2008
- Wang & Stidham, 2018
- Rong, 2018
- Kopylov & Zhang, 2015
- Hong, 1984
- Zhang et al., 2009
- Ren, 1995
- Zhang, 1986
Bibliography
- Qin, Zuohuan; Xi, Dangpeng; Sames, Benjamin; Do Carmo, Dermeval Aparecido; Wang, Xuri; Xu, Yankang; Yu, Zhiqiang; Wei, Feng; Leite, Amanda Moreira (2018), "Ostracods of the non-marine Lower Cretaceous Dabeigou Formation at Yushuxia (Luanping basin, North China): Implications for the early Jehol Biota age", Cretaceous Research, 86: 199–218, Bibcode:2018CrRes..86..199Q, doi:10.1016/j.cretres.2018.03.010, ISSN 0195-6671
- Rong, Y.-F (2018), "Restudy of Regalerpeton weichangensis (Amphibia: Urodela) from the Lower Cretaceous of Hebei, China", Vertebrata PalAsiatica, 56: 121–136
- Wang, M.; Stidham, T. A. (2018), "A new clade of basal Early Cretaceous pygostylian birds and developmental plasticity of the avian shoulder girdle", Proceedings of the National Academy of Sciences, 115 (42): 10708–10713, Bibcode:2018PNAS..11510708W, doi:10.1073/pnas.1812176115, PMC 6196491, PMID 30249638
- Kopylov, D. S.; Zhang, H. C. (2015), "New ichneumonids (Insecta: Hymenoptera: Ichneumonidae) from the Lower Cretaceous of north China", Cretaceous Research, 52: 591–604, Bibcode:2015CrRes..52..591K, doi:10.1016/j.cretres.2014.03.012
- Zhang, X. W.; Ren, D.; Pang, H.; Shih, C.K. (2009), "Late Mesozoic chresmodids with forewing from Inner Mongolia, China (Polyneoptera: Archaeorthoptera)", Acta Geologica Sinica, 84: 38–46, doi:10.1111/j.1755-6724.2010.00168.x
- Zhang, Z.; Zhou, Z.; Benton, M. J. (2008), "A primitive confuciusornithid bird from China and its implications for early avian flight", Science in China Series D: Earth Sciences, 51 (5): 625–639, Bibcode:2008ScChD..51..625Z, doi:10.1007/s11430-008-0050-3
- Ren, D (1995), Insecta, D. Ren, L.W. Lu, Z.G. Guo, S.A. Ji (eds.), Faunae and stratigraphy of Jurassic-Cretaceous in Beijing and the adjacent areas, pp. 47–121
- Zhang, J. F (1986), Some fossil insects from the Jurassic of northern Hebei, China, The Paleontology and Stratigraphy of Shandong, pp. 74–84
- Hong, Y. C (1984), Insecta, Palaeontological Atlas of North China, II, Mesozoic Volume, pp. 128–185
Further reading
Further reading
- Vickers-Rich, Patricia & Rich, Thomas Hewett (1993); Wildlife of Gondwana. Reed. ISBN 0-7301-0315-3