Gugyedong Formation Explained

Gugyedong Formation
Type:	Geological formation
Age:	Aptian-Albian ~
Period:	Albian
Prilithology:	Siltstone, conglomerate
Region:	Gyeongsangbuk-do
Coordinates:	36°N 128.5°W
Paleocoordinates:	43.9°N 126.4°W
Unitof:	Hayang Group
Extent:	Gyeongsang Basin

The Gugyedong Formation, also known as the Guyedong Beds, is an Aptian to Albian geologic formation in South Korea.^[1] Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.^[2]

Fossil content

The following fossils have been reported from the formation:^[1]

Reptiles

• Ultrasaurus tabriensis- Nomen Dubium^{[3] [4]}
• Dromaeosauridae indet. (="Koreanosaurus koreanensis")^{[5] [6]}
• Sauropoda indet.
• Testudines indet.

Flora

• Pseudofrenelopsis parceramosa

See also

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

Notes and References

1. https://paleobiodb.org/classic/displayStrata?geological_group=Hayang&formation=Gugyedong&group_formation_member=Gugyedong Guyedong Formation
2. Weishampel et al., 2004, pp.517-607
3. Kim . Haang-Mook . Cretaceous dinosaurs from Korea. . Journal of the Geological Society of Korea . 1983 . 19 . 115–126.
4. Lee . Yuong-Nam . Yang . Seong-Young . Park . Eun-Ju . Sauropod dinosaur remains from the Gyeongsang Supergroup, Korea. . Paleontological Society of Korea Special Publication . 1997 . 2 . 103–114.
5. Kim . Haang-Mook . Cretaceous dinosaurs from Korea. . Journal of the Geological Society of Korea . 1983 . 19 . 115–126.
6. Kim . Haang Mook . Gishlick . Alan D. . Tsuihiji . Takanobu . The first non-avian maniraptoran skeletal remains from the Lower Cretaceous of Korea . Cretaceous Research . April 2005 . 26 . 2 . 299–306 . 10.1016/j.cretres.2005.01.001. 2005CrRes..26..299K .