Hasandong Formation

Hasandong Formation
Hasandong Formation
Stratigraphic range: Aptian-Albian; ~
Type	Geological formation
Unit of	Shindong Group
Underlies	Jinju Formation
Overlies	Nakdong Formation
Thickness	1200 metres
Lithology
Primary	Mudstone
Other	Shale, sandstone
Location
Coordinates	35.1°N 128.0°E
Approximate paleocoordinates	41.3°N 128.1°E
Region	North Gyeongsang Province
Country	South Korea
	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 diagnostic to the genus level are among the fossils that have been recovered from the formation.[2] Tracks of the pterosaur ichnospecies Pteraichnus koreanensis have also been recovered from the unit.[3]

Fossil content

Paleofauna

Hadongsuchus acerdentis[4] - nomen nudum
Tyrannosauroidea indet. - "Tooth."
Carcharodontosauridae indet.[5]
Chiayusaurus asianensis? (possibly a synonym of Chiayusaurus lacustris) - "Tooth."[6]
Pukyongosaurus milleniumi - "Cervical and dorsal vertebrae, ribs, limb and girdle elements."[6][7]
Hadrosauroidea indet. - "Tooth."
Pterodactyloidea indet. (belongs to either Boreopteridae or Anhanguerian)[8][9]
Dsungaripteridae indet.[10]
Sinamia sp.[11]
Sauripes hadongensis - an ichnotaxon (the oldest lizard trackway; shows bipedalism)[12]
Pteraichnus koreanensis - pterosaur ichnotaxon[3]
Testudoolithus aff. curiosa - turtle ootaxon[13]

Paleoflora[14]

Thallites (T. yabei) - liverworts
Onychiopsis (O. elongata) - leptosporangiate ferns
Cladophlebis (C. denticulata, C. shinshuensis, C./Eboracia? lobifolia and C./Klukia? koraiensis)
Brachyphyllum (B. japonicum)
Elatocladus (E. tennerima)
Taeniopteris (T.? sp. and cf. T. auriculata) - cycad ferns

References

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. doi:10.1016/j.jseaes.2018.07.004.
Weishampel, David B.; Barrett, Paul M.; Coria, Rodolfo A.; Le Loueff, Jean; Xu, Xing; Zhao, Xijin; Sahni, Ashok; Gomani, Emily M.P.; Noto, Christopher N. (2004). "Dinosaur distribution". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.). The Dinosauria (Second ed.). Berkeley: University of California Press. pp. 517–607. ISBN 978-0-520-24209-8.
Y.-N. Lee, H.-J. Lee, J. and Y. Kobayashi. 2008. New pterosaur tracks from the Hasandong Formation (Lower Cretaceous) of Hadong County, South Korea. Cretaceous Research 29:345-353.
Lee, H.-J. and Lee, Y.-N., 2005, A new protosuchian (Archosauria: Crocodyliformes) skull from the Hasandong Formation (Lower Cretaceous) of Hadong County, South Korea. Journal of Vertebrate Paleontology, 25 (Supplement to Number 3), 83A
Yun, Chan-gyu (2020-06-02). "A Carcharodontosaurid tooth from the Hasandong Formation (Lower Cretaceous) of South Korea". Mongolian Geoscientist. 50: 2–10. doi:10.5564/mgs.v50i0.1325. ISSN 2663-5151.
"Table 13.1," in Weishampel, et al. (2004). Page 271.
Z. Dong, I. S. Paik, and H. J. Kim. 2001. A preliminary report on a sauropod from the Hasandong Formation (Lower Cretaceous), Korea. In T. Deng, Y. Wang (eds.), Proceedings of the Eighth Annual Meeting of the Chinese Society of Vertebrate Paleontology 41-53.
Park, J.-Y.; Lee, S.; Kim, S.-H.; Son, M.; Lee, Y.-N. (2020). 경상남도 하동군 하부 백악기 하산동층에서 산출된 익룡 지골 화석 [A pterosaur wing phalanx from the Lower Cretaceous Hasandong Formation of Hadong-gun, Gyeongsangnam-do, South Korea] (PDF). Journal of the Geological Society of Korea. 56 (1): 77–84. doi:10.14770/jgsk.2020.56.1.77.
Yun, Chan-Gyu (2020). "Boreopterid pterosaur fossils from South Korea reconsidered". New Mexico Museum of Natural History and Science Bulletin. 82: 567–568.
Lim, Jong-Deock; Baek, Kwang-Seok; Yang, Seung Young (2002). "A new record of a pterosaur from the Early Cretaceous of Korea". Current Science. 82 (10): 1208–1210.
Yabumoto, Y.; Yang, S.Y.; Kim, T.W. (2006). "Early Cretaceous freshwater fishes from Japan and Korea" (PDF). Journal of the Paleontological Society of Korea. 22 (1): 119–132.
Lee, H.J.; Lee, Y.N.; Fiorillo, A.R.; Lü, J. (2018). "Lizards ran bipedally 110 million years ago". Scientific Reports. 8 (1): 2617. doi:10.1038/s41598-018-20809-z. PMID 29449576.
Choi, S.; Kim, H.; Paik, I.; Park, Y.; Jung, H.; Xu, X. (2023). "Turtle eggs from the Lower Cretaceous Hasandong Formation (South Korea) with relict aragonite under significant thermal maturity". Journal of Vertebrate Paleontology. e2183866. doi:10.1080/02724634.2023.2183866.
Kim, Jong-Heon; Nam, Kye-Soo; Lee, Seong-Bok; Jeon, Yeong-Seok (2016). "Fossil Plants from the Early Cretaceous Hasandong Formation of Chilgok Area, Korea" (PDF). Journal of The Korean Earth Science Society. 37 (5): 295−308. doi:10.5467/JKESS.2016.37.5.295.

Bibliography

Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2

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[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. doi:10.1016/j.jseaes.2018.07.004.

[2] Weishampel, David B.; Barrett, Paul M.; Coria, Rodolfo A.; Le Loueff, Jean; Xu, Xing; Zhao, Xijin; Sahni, Ashok; Gomani, Emily M.P.; Noto, Christopher N. (2004). "Dinosaur distribution". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.). The Dinosauria (Second ed.). Berkeley: University of California Press. pp. 517–607. ISBN 978-0-520-24209-8.

[Leeetal2008-3] Y.-N. Lee, H.-J. Lee, J. and Y. Kobayashi. 2008. New pterosaur tracks from the Hasandong Formation (Lower Cretaceous) of Hadong County, South Korea. Cretaceous Research 29:345-353.

[4] Lee, H.-J. and Lee, Y.-N., 2005, A new protosuchian (Archosauria: Crocodyliformes) skull from the Hasandong Formation (Lower Cretaceous) of Hadong County, South Korea. Journal of Vertebrate Paleontology, 25 (Supplement to Number 3), 83A

[5] Yun, Chan-gyu (2020-06-02). "A Carcharodontosaurid tooth from the Hasandong Formation (Lower Cretaceous) of South Korea". Mongolian Geoscientist. 50: 2–10. doi:10.5564/mgs.v50i0.1325. ISSN 2663-5151.

[table-13-1-271-6] "Table 13.1," in Weishampel, et al. (2004). Page 271.

[7] Z. Dong, I. S. Paik, and H. J. Kim. 2001. A preliminary report on a sauropod from the Hasandong Formation (Lower Cretaceous), Korea. In T. Deng, Y. Wang (eds.), Proceedings of the Eighth Annual Meeting of the Chinese Society of Vertebrate Paleontology 41-53.

[8] Park, J.-Y.; Lee, S.; Kim, S.-H.; Son, M.; Lee, Y.-N. (2020). 경상남도 하동군 하부 백악기 하산동층에서 산출된 익룡 지골 화석 [A pterosaur wing phalanx from the Lower Cretaceous Hasandong Formation of Hadong-gun, Gyeongsangnam-do, South Korea] (PDF). Journal of the Geological Society of Korea. 56 (1): 77–84. doi:10.14770/jgsk.2020.56.1.77.

[9] Yun, Chan-Gyu (2020). "Boreopterid pterosaur fossils from South Korea reconsidered". New Mexico Museum of Natural History and Science Bulletin. 82: 567–568.

[10] Lim, Jong-Deock; Baek, Kwang-Seok; Yang, Seung Young (2002). "A new record of a pterosaur from the Early Cretaceous of Korea". Current Science. 82 (10): 1208–1210.

[11] Yabumoto, Y.; Yang, S.Y.; Kim, T.W. (2006). "Early Cretaceous freshwater fishes from Japan and Korea" (PDF). Journal of the Paleontological Society of Korea. 22 (1): 119–132.

[12] Lee, H.J.; Lee, Y.N.; Fiorillo, A.R.; Lü, J. (2018). "Lizards ran bipedally 110 million years ago". Scientific Reports. 8 (1): 2617. doi:10.1038/s41598-018-20809-z. PMID 29449576.

[13] Choi, S.; Kim, H.; Paik, I.; Park, Y.; Jung, H.; Xu, X. (2023). "Turtle eggs from the Lower Cretaceous Hasandong Formation (South Korea) with relict aragonite under significant thermal maturity". Journal of Vertebrate Paleontology. e2183866. doi:10.1080/02724634.2023.2183866.

[14] Kim, Jong-Heon; Nam, Kye-Soo; Lee, Seong-Bok; Jeon, Yeong-Seok (2016). "Fossil Plants from the Early Cretaceous Hasandong Formation of Chilgok Area, Korea" (PDF). Journal of The Korean Earth Science Society. 37 (5): 295−308. doi:10.5467/JKESS.2016.37.5.295.