Sinuiju Formation

Sinuiju Formation Stratigraphic range: Barremian-Aptian ~130–113 Ma PreꞒ Ꞓ O S D C P T J K Pg N
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 / 40.1; 124.4Coordinates: 40°06′N 124°24′E / 40.1°N 124.4°E / 40.1; 124.4
Approximate paleocoordinates	43°48′N 125°48′E / 43.8°N 125.8°E / 43.8; 125.8
Country	North Korea
Type section
Named for	Sinuiju city
Sinuiju Formation (North Korea)

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]

Fossil content[]

• Anurognathidae indet.
• Confuciusornithidae indet. (known colloquially as the Archaeopteryx of Korea)
• "Proornis coreae" (?Avialae indet.)^{[citation needed]}

Insects^[3]

• Stenophlebia ryonsangensis^[4]

See also[]

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with few dinosaur genera

References[]

Bibliography[]

• Won, C.G.; K.S. So, and H.C. Kim. 2021. A new odonatan (Stenophlebiidae) from the Lower Cretaceous Sinuiju Formation of North Phyongan Province, the Democratic People’s Republic of Korea. Palaeoworld in press. .. doi:10.1016/j.palwor.2021.02.002