Hasandong Formation

Hasandong Formation
Stratigraphic range: Aptian-Albian
~118.0–112.4 Ma
TypeGeological formation
Unit ofShindong Group
UnderliesJinju Formation
OverliesNakdong Formation
Thickness1200 metres
Lithology
PrimaryMudstone
OtherShale, sandstone
Location
Coordinates35°06′N 128°00′E / 35.1°N 128.0°E / 35.1; 128.0
Approximate paleocoordinates41°18′N 128°06′E / 41.3°N 128.1°E / 41.3; 128.1
RegionGyeongsang Province
Country South Korea
Hasandong Formation is located in South Korea
Hasandong Formation
Hasandong Formation (South Korea)

The Hasandong Formation (Korean: 하산동층; Hanja: 霞山洞層; RR: Hasandong-cheung) is an Early Cretaceous (Aptian to Albian) geologic formation in South Korea. It has been dated to the late Aptian and earliest Albian, between 118.0 ± 2.6 Ma and 112.4 ± 1.3 Ma.[1] Dinosaur remains have been discovered from this formation, though no genus is considered valid as of 2016.[2] Other reptiles from the formation include the adocid turtle Proadocus and possibly the pterosaur Dsungaripterus.[3][4][5]

  1. ^ Lee, Tae-Ho; Park, Kye-Hun; Yi, Keewook (October 2018). "Nature and evolution of the Cretaceous basins in the eastern margin of Eurasia: A case study of the Gyeongsang Basin, SE Korea". Journal of Asian Earth Sciences. 166: 19–31. Bibcode:2018JAESc.166...19L. doi:10.1016/j.jseaes.2018.07.004. S2CID 135061525.
  2. ^ Park, J.-Y. (2016). "Comments on the validity of the taxonomic status of "Pukyongosaurus" (Dinosauria: Sauropoda)" (PDF). Memoir of the Fukui Prefectural Dinosaur Museum. 15: 27–32.
  3. ^ Cite error: The named reference Pro was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Yang2015 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference KM18 was invoked but never defined (see the help page).