- Source: Jinju Formation
The Jinju Formation (Korean: 진주층; Hanja: 晋州層; RR: Jinju-cheung) is an Early Cretaceous geologic formation in South Korea. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus. The depositional age of this formation spans from approximately 112.4 ± 1.3 to 106.5 million years ago (early Albian) based on detrital zircon U-Pb dating. It predominantly consists of black shale, with sandstone packets, deposited in a fluvial-lacustrine setting.
A diverse arthropod fauna, including freshwater arthropods, spiders, and insects, is known from the formation. Other notable fossils known from the formation include several freshwater fishes, ostracods, and plants. This formation has also "attracted global ichnological attention" for the variety of important ichnofossils. Columnar and rod-shaped stromatolites have also been found here.
Fossil content
= Flora
== Spiders
== Insects
=Jinju formation consists of a diverse order of insects: Orthoptera, Homoptera, Mantodea, Diptera, Coleoptera, Hymenoptera, Dermaptera, Neuroptera, Blattoidea, Hemiptera, Odonata, Mecoptera, etc.
Alienoptera
Blattodea
Coleoptera
Dermaptera
Diptera
Hemiptera
Hymenoptera
Odonata
Orthoptera
Raphidioptera
Neuroptera
= Crustaceans
=Isopoda
Ostracoda
Spinicaudata
= Vertebrates
=Source:
Actinopterygii
Archosauria
= Mollusks
=Bivalvia
Gastropoda
= Ichnofossils
=Unnamed ichnofossils from the Jinju Formation include Ornithopod tracks and Caddisfly bioherms.
See also
ko:경상 분지 (Gyeongsang Basin)
Geology of South Korea § Gyeongsang Basin
List of dinosaur- bearing rock formations
List of stratigraphic units with indeterminate dinosaur fossils
References
= Bibliography
=Lee, Tae-Ho; Park, Kye-Hun; Yi, Keewook (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.
Weishampel, David B.; Dodson, Peter; Osmólska, Halszka, eds. (2004). The Dinosauria (2nd ed.). Berkeley: University of California Press. ISBN 0-520-24209-2. Retrieved 2019-02-21.