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Jinju Formation

Early Cretaceous geologic formation in South Korea From Wikipedia, the free encyclopedia

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The Jinju Formation (Korean: 진주층; Hanja: 晋州層; RR: Jinju-cheung), also known as the Dongmyeong Formation (Korean: 동명층; Hanja: 東明層; RR: Dongmyeong-cheung) in some literature is an Early Cretaceous geologic formation in South Korea.[2] Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[3] 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.[4] It predominantly consists of black shale, with sandstone packets, deposited in a fluvial-lacustrine setting.

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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.[5] Columnar and rod-shaped stromatolites have also been found here.[6]

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Fossil content

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Plants

More information Plants of the Jinju Formation ...

Spiders

More information Spiders of the Jinju Formation ...

Insects

Odonata

More information Dragonflies and damselflies of the Jinju Formation ...

Dermaptera

More information Earwigs of the Jinju Formation ...

Orthoptera

More information Orthopterans of the Jinju Formation ...

Dictyoptera

More information Dictyopterans of the Jinju Formation ...

Hemiptera

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Hymenoptera

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Raphidioptera

More information Snakeflies of the Jinju Formation ...

Neuroptera

More information Lacewings of the Jinju Formation ...

Coleoptera

More information Beetles of the Jinju Formation ...

Diptera

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Crustaceans

Isopoda

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Ostracoda

Ostracods of the Jinju Formation[37][38]
Genus Species Region Member Material Notes Image
Scabriculocypris S. yanbianensis Jeongcheon
Cypridea
  • C. jinjuria
  • C. khandae
  • C. samesi[39]
C. jinjuria in Gwanghyeon
Mongolocypris M. kohi[40]
Lycopterocypris L. cf. celsa Jeongcheon
Candona C. sp.
Djungarica D. sp. Jeongcheon
Rhinocypris R. sp. Previously assigned to as Ilyocypris sp.

Spinicaudata

More information Clam shrimps of the Jinju Formation ...

Vertebrates

Source:[42]

Actinopterygii

More information Fishes of the Jinju Formation ...

Archosauria

More information Reptiles of the Jinju Formation ...

Mollusks

Bivalvia

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Gastropoda

More information Gastropods of the Jinju Formation ...

Ichnofossils

Unnamed ichnofossils from the Jinju Formation include Ornithopod tracks and Caddisfly bioherms.[6]

More information Ichnofossils of the Jinju Formation ...
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References

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