Sinuiju Formation
| Sinuiju Formation | |
|---|---|
| Stratigraphic range: Barremian-Aptian | |
| 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°06′N 124°24′E / 40.1°N 124.4°E |
| Approximate paleocoordinates | 43°48′N 125°48′E / 43.8°N 125.8°E |
| Country | North Korea |
| Type section | |
| Named for | Sinuiju city |
  Sinuiju Formation (North Korea) | |
The Sinuiju Formation(신의주층) is a geologic formation in North Korea. Formerly of uncertain age, it is now thought to be Early Cretaceous. A variety of fossils are known from the formation, including those of anurognathid pterosaurs (possibly Jeholopterus) and birds such as the specimen of a very large enantiornithine with a 5 cm (2.0 in) long tibia and a 3.5 cm (1.4 in) long pygostyle. Frogs have also been found in the formation.[1][2] Numerous compression fossils of insects have also been found.[3]
Fossil content
Fish
| Fish from the Sinujiu Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Lycoptera | L. sp.[1][2] | ||||
| Acipenseriformes | Acipenseriformes indet.[1][2] | ||||
Amphibians
| Amphibians from the Sinujiu Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Anura | Anura indet. (PossiblyLiaobatrachus grabaui).[4] | ||||
Pterosaurs
| Pterosaurs from the Continental Teriminal Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Jeholopterus | J. cf. ningchengensis[5] | Specimen CKGP 19960828, formerly PS198922[5][6] | |||
| Pterosauria | Indeterminate | Specimen PS199921[7] | |||
Dinosaurs
Birds
| Birds from the Sinujiu Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Confuciusornithidae | Confuciusornithidae indet. [1][2] | (Includes the fossil known colloquially as the Archaeopteryx of Korea) | |||
| Enantiornithes | Enantiornithes indet.[1][2] | ||||
| Ornithurae | Ornithurae indet.[2] | ||||
Non-Avian Dinosaurs
| Dinosaurs from the Sinujiu Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Dinosauria | Dinosauria indet | A single tooth[7] | |||
Mammals
| Proboscideans from the Continental Teriminal Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Multituberculata | Multituberculata indet.[8] | ||||
Insects[9]
| Insects from the Sinujiu Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Angarosphex | A. baektoensus | ||||
| Ephemeropsis | E. sp | ||||
| Karataus | K. ryonsangensis | ||||
| Sinuijumantispa | Sinuijumantispa ryonsangiensis[10] | ||||
| Stenophlebia | Stenophlebia ryonsangensis[11] | ||||
| Stellularis | Stellularis sinuijuensis | ||||
| Sinuijus | Sinuijus baektoensis | ||||
| Sinuijuhelorus | Sinuijuhelorus baektoensis | ||||
| Pompilopterus | Pompilopterus ryonsangensis | ||||
Conchostracans
| conchostracans from the Sinujiu Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Material | Notes | Member | Images |
| Eosestheria | E.sp. | A conchostracan[2] | |||
See also
References
- ^ a b c d e Gao, K.; Li, Q.; Wei, M.; Pak, H.; Pak, I. (2009). "Early Cretaceous birds and pterosaurs from the Sinuiju Series, and geographic extension of the Jehol Biota into the Korean Peninsula" (PDF). Journal of the Paleontological Society of Korea. 25 (1): 57–61. ISSN 1225-0929.
- ^ a b c d e f g Choi, S.; Lee, Y.N. (2017). "A review of vertebrate body fossils from the Korean Peninsula and perspectives". Geosciences Journal. 21 (6): 867–889. Bibcode:2017GescJ..21..867C. doi:10.1007/s12303-017-0040-6. S2CID 133835817.
- ^ 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. Bibcode:2019CrRes..99..240J. doi:10.1016/j.cretres.2019.02.019. S2CID 134337948.
- ^ So, Kwang-Sik; Jong, Tal-Mi; Won, Chol Guk; Jo, Song-Dae (2022-08-05). "A fossil anuran from the Lower Cretaceous Sinuiju Formation, North Phyongan Province, Democratic People's Republic of Korea". Cretaceous Research. 140: 105304. Bibcode:2022CrRes.14005304S. doi:10.1016/j.cretres.2022.105304. ISSN 0195-6671. S2CID 251425462.
- ^ a b So, K. S.; Kim, P. H.; Won, C. G. (2024). "First Articulated Rhamphorhynchoid Pterosaur from the Early Cretaceous of the Democratic People's Republic of Korea". Paleontological Journal. 57 (1 supplement): S90 – S94. doi:10.1134/S003103012360018X.
- ^ Won, C.G. (2022). Kim, K.C. (ed.). Sinuiju Biota of the Mesozoic in Korea (PDF). Foreign Languages Publishing House. p. 83.
- ^ a b Won, Chol Guk; So, Kwang-Sik; Pak, Un Song; Ju, Il Yop; Ri, Chol Jun; Jon, Su Hyang; Ma, Jun (November 2022). "Discovery of Early Cretaceous Sinuiju Biota in the Democratic People's Republic of Korea and comparison with Jehol Biota in China". Cretaceous Research. 139: 105303. Bibcode:2022CrRes.13905303W. doi:10.1016/j.cretres.2022.105303.
- ^ Won, C. G.; So, K. S.; Jon, S. H. (December 2023). "The First Known Mesozoic Mammal in the Democratic People's Republic of Korea". Paleontological Journal. 57 (7): 826–832. Bibcode:2023PalJ...57..826W. doi:10.1134/S0031030123070122. ISSN 0031-0301.
- ^ Paektodong, Sinuiju City at Fossilworks.org
- ^ So, Kwang- Sik; Won, Chol-Guk (2022-02-16). "A new fossil mantis fly (Insecta: Neuroptera: Mantispidae) from the Lower Cretaceous of the Democratic People's Republic of Korea". Cretaceous Research. 135: 105175. Bibcode:2022CrRes.13505175S. doi:10.1016/j.cretres.2022.105175. ISSN 0195-6671. S2CID 246936524.
- ^ Won et al., 2021
Bibliography
- Won, C.G.; So, K.S.; Kim, H.C. (2022), "A new odonatan (Stenophlebiidae) from the Lower Cretaceous Sinuiju Formation of North Phyongan Province, the Democratic People's Republic of Korea", Palaeoworld, 31: 116–120, doi:10.1016/j.palwor.2021.02.002