Sinuiju Formation
The Sinuiju Formation is a geologic formation in North Korea. Formerly of uncertain age, it is now thought to be Early Cretaceous. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[1] Compression fossils of insects are also known from the formation.[2]
| Sinuiju Formation Stratigraphic range: Barremian-Aptian ~130–113 Ma | |
|---|---|
| Type | Geological formation |
| Sub-units | 8 members |
| Overlies | Precambrian basement |
| Thickness | >500 metres (1,600 ft) |
| Lithology | |
| Primary | Sandstone, siltstone, mudstone |
| Other | Andesite |
| Location | |
| Coordinates | 40.1°N 124.4°E |
| Approximate paleocoordinates | 43.8°N 125.8°E |
| Country |  North Korea |
| Type section | |
| Named for | Sinuiju city |
  Sinuiju Formation (North Korea) | |
Fossil content
- Anurognathidae indet.
- Confuciusornithidae indet. (known colloquially as the Archaeopteryx of Korea)
- "Proornis coreae" (?Avialae indet.)
- Insects[3]
- Angarosphex baektoensus
- Sinuijuhelorus baektoensis
- Sinuijus baektoensis
- Stellularis sinuijuensis
See also
- List of dinosaur-bearing rock formations
References
- Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- Jon, SuHyang; Won, CholGuk; So, KwangSik; Nam, TuYong (July 2019). "New Mesozoic insect fossils from the Democratic People's Republic of Korea". Cretaceous Research. 99: 240–245. doi:10.1016/j.cretres.2019.02.019.
- Paektodong, Sinuiju City at Fossilworks.org
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