Sinuiju Formation
Stratigraphic range: Barremian-Aptian
~130–113 Ma
TypeGeological formation
Sub-units8 members
OverliesPrecambrian basement
Thickness>500 metres (1,600 ft)
Lithology
PrimarySandstone, siltstone, mudstone
OtherAndesite
Location
Coordinates40°06′N 124°24′E / 40.1°N 124.4°E / 40.1; 124.4
Approximate paleocoordinates43°48′N 125°48′E / 43.8°N 125.8°E / 43.8; 125.8
Country North Korea
Type section
Named forSinuiju city
Sinuiju Formation is located in North Korea
Sinuiju Formation
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 pterosaurs and birds, including an indeterminate anurognathid and a very large enantiornithine specimen 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

Amphibians

Pterosaurs

Birds

Insects[5]

Other invertebrates

See also

References

  1. ^ a b c d e f 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.
  2. ^ a b c d e f g h 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.
  3. ^ 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.
  4. ^ 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.
  5. ^ Paektodong, Sinuiju City at Fossilworks.org
  6. ^ Won et al., 2021
  7. ^ 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.

Bibliography

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