Jeongchon Mountain, Jeongchon City, Jinju (Cretaceous of South Korea)

Where: South Korea (35.1° N, 128.1° E: paleocoordinates 44.4° N, 122.7° 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; Daejeon Science High School; Gongju National University of Education

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 184781: authorized by Matthew Clapham, entered by Matthew Clapham on 22.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Coleoptera - Elateridae
Megalithomerus magohalmii n. gen. n. sp.3, Koreagrypnus jinju n. gen. n. sp.3
Megalithomerus magohalmii n. gen. n. sp.3 Sohn and Nam 2019 click beetle
GNUE-I-2013001
Koreagrypnus jinju n. gen. n. sp.3 Sohn and Nam 2019 click beetle
GNUE-I-2013002
 Coleoptera - Coptoclavidae
Coptoclava sp. Ping 1928 beetle
KOPRIF7001, 702, 7003, 7004, 7005, 7006
 Odonata - Hemeroscopidae
Hemeroscopus baissicus1 Pritykina 1977 true dragonfly
DSHS-OD-2011001, 2011046, 2011097
Arachnida
 Araneae - Lagonomegopidae
Jinjumegops dalingwateri n. gen. n. sp.2, Koreamegops samsiki n. gen. n. sp.2
Jinjumegops dalingwateri n. gen. n. sp.2 Park et al. 2019 spider
KOPRIF7014
Koreamegops samsiki n. gen. n. sp.2 Park et al. 2019 spider
KOPRIF7011, 7012
 Araneae -
Entelegynae "indet. 1"2 Simon 1893 spider
KOPRIF7016
Entelegynae "indet. 2"2 Simon 1893 spider
KOPRIF7013, 7015