Gwanghyeon 1 section, Gunwi-gun (Cretaceous of South Korea)

Where: South Korea (36.3° N, 128.6° E: paleocoordinates 45.6° N, 122.4° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Jinju Formation (Shindong Group), Albian (113.0 - 100.5 Ma)

• Formerly given a wide age range (often Barremian), but youngest detrital zircon in Jinju Formation is 106 Ma, indicating an age no older than Albian (Lee et al., 2010)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, fine-grained, gray shale

• Initiated by north–south left-lateral regional simple shear as a wrench tectonic system due to highly oblique subduction of the Izanagi Plate (Lee et al., 2010)

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Korean Polar Research Institute

Primary reference: T. Y. Park, Y. H. Kim, and K. S. Nam. 2013. Preliminary research on the aquatic coleopteran, Coptoclava from the Early Cretaceous Jinju Formation. Journal of the Geological Society of Korea 49:617-624 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184782: authorized by Matthew Clapham, entered by Matthew Clapham on 22.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Coleoptera - Coptoclavidae
Coptoclava sp. Ping 1928 beetle
KOPRIF7007, 7008, 7009