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Early Cretaceous geologic formation in South Korea
The Jinju Formation (Korean : 진주층 ; Hanja : 晋州層 ; RR : Jinju-cheung ) is an Early Cretaceous geologic formation in South Korea .[1] Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus .[2] 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.[3] It predominantly consists of black shale, with sandstone packets, deposited in a fluvial-lacustrine setting.
A diverse spider fauna is known from the formation, including indeterminate mygalomorphs and palpimanoids as well as two species of lagonomegopid belonging to the genera Koreamegops and Jinjumegops .[4] Other compression fossils known from the formation include a species of the zhangsolvid fly Buccinatormyia , the elaterid beetle Koreagrypnus , and the ichthyodectiform fish Jinjuichthys . 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]
Fossil content [ edit ]
Spiders [ edit ]
Insects [ edit ]
Jinju formation consists of a diverse order of insects: Orthoptera , Homoptera , Mantodea , Diptera , Coleoptera , Hymenoptera , Dermaptera , Neuroptera , Blattoidea , Hemiptera , Odonata , Mecoptera , etc. A larvae fossil of aquatic insect has also been discovered.[6]
Blattodea [ edit ]
Cockroaches of the Jinju Formation[10]
Genus
Species
Region
Member
Material
Notes
Image
Rhipidioblattina
R. sp. cf. R. radipinguis
R?. sp. cf. R. jilinensis
R. sp. A
Mesoblattina
M. sp. A
M. sp. B
M. sp. C
M. sp. D
Samaroblatta
S. sp. cf. S. rhypha
Blattula
B. sp. cf. B. exetenuata
B. sp. A
Mesoblattula
M. sp.
Indeterminate
A total of 13 indeterminate species
Coleoptera [ edit ]
Dermaptera [ edit ]
Diptera [ edit ]
Heteroptera [ edit ]
Hymenoptera [ edit ]
Odonata [ edit ]
Orthoptera [ edit ]
Raphidioptera [ edit ]
Neuroptera [ edit ]
Termites [ edit ]
Termites of the Jinju Formation
Genus
Species
Region
Member
Material
Notes
Image
Sclerotermes [25]
S. samsiki
Known only from an isolated wing, uncertain placement
Crustaceans [ edit ]
Isopoda [ edit ]
Isopods of the Jinju Formation
Genus
Species
Region
Member
Material
Notes
Image
Archaeoniscus [26]
A. coreaensis
A freshwater occurrence of the genus Archaeoniscus
Ostracoda [ edit ]
Spinicaudata [ edit ]
Clam shrimps of the Jinju Formation
Genus
Species
Region
Member
Material
Notes
Image
Yanjiestheria [30]
Y. kyongsangensis
Y. chekiangensis
Y. cf. wannanensis
Y. jinjuensis
Y. sp.
Vertebrates [ edit ]
Actinopterygii [ edit ]
Archosauria [ edit ]
Reptiles of the Jinju Formation[31]
Genus
Species
Region [35]
Member
Material
Notes
Image
Crocodyliformes indet.
Goryeong
a right mandible
Titanosauriformes indet.[36]
Sacheon
a tooth
Initially suggested to be of Asian Brachiosaurid by Lim, Martin and Baek (2001), but Barrett et al. (2002) and Choi & Lee (2017) considers it to be indeterminate titanosauriform .
Pterodactyloidea indet.
Goryeong
teeth
While suggested to be of Boreopterid origin by Choi & Lee (2017), Yun (2021) and Yun (2024) considers them to be Anhanguerian instead on the basis of the morphological disparity from Boreopteridae and the results of two-dimensional geometric morphometric analyses.[37] [38]
Mollusks [ edit ]
Bivalvia [ edit ]
Bivalves of the Jinju Formation[39]
Genus
Species
Region
Member
Material
Notes
Image
Plicatounio
P. naktongensis
Nagdongia
N. soni
The genus Nagdongia is considered to be synonymous with Nakamuranaia by some.
Trigonioides
T. jaehoi
Gastropoda [ edit ]
Gastropods of the Jinju Formation[8]
Genus
Species
Region
Member
Material
Notes
Image
Brotiopsis
B. kobayashi
dominant gastropod of the formation
Thiara
T . sp.
Viviparus [40]
V . sp.
Ichnofossils [ edit ]
See also [ edit ]
References [ edit ]
^ Jinju Formation in the Paleobiology Database
^ 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 .
^ Chae, Yong-Un; Lim, Jong Deock; Kim, Cheong-Bin; Kim, Kyung Soo; Ha, Sujin; Lim, Hyoun Soo (2020). "Detrital zircon U-Pb ages of the uppermost Jinju Formation in the Natural Monument No. 534 'Tracksite of Pterosaurs, Birds, and Dinosaurs in Hotandong, Jinju', Korea" (PDF) . Journal of the Korean Earth Science Society . 41 (4): 367−380. doi :10.5467/JKESS.2020.41.4.367 . S2CID 225332234 .
^ a b Park, Tae-Yoon S.; Nam, Kye-Soo; Selden, Paul A. (2019-08-03). "A diverse new spider (Araneae) fauna from the Jinju Formation, Cretaceous (Albian) of Korea" . Journal of Systematic Palaeontology . 17 (15): 1271–1297. doi :10.1080/14772019.2018.1525441 . ISSN 1477-2019 . S2CID 92137182 .
^ a b Kim, Kyung Soo; Lockley, Martin G.; Lim, Jong Deock; Xing, Lida (2019). "Exquisitely-preserved, high-definition skin traces in diminutive theropod tracks from the Cretaceous of Korea" . Scientific Reports . 9 (1): 2039. Bibcode :2019NatSR...9.2039K . doi :10.1038/s41598-019-38633-4 . PMC 6375998 . PMID 30765802 .
^ a b Paik, I.S. (2005). "The oldest record of microbial-caddisfly bioherms from the Early Cretaceous Jinju Formation, Korea: occurrence and palaeoenvironmental implications" (PDF) . Palaeogeography, Palaeoclimatology, Palaeoecology . 218 (3−4): 301−315. Bibcode :2005PPP...218..301P . doi :10.1016/j.palaeo.2004.12.020 .
^ Kim, Jong-Heon (2009). "New occurrence of Cupressinocladus sp. from the Lower Cretaceous Jinju Formation, Shindong Group, Korea" (PDF) . Journal of the Korean Earth Society . 30 (5): 605−610. Bibcode :2012JPal...86..626P . doi :10.1666/11-131R.1 . S2CID 131617665 .
^ a b c d e f Paik, In Sung; Kim, Hyun Joo; Kim, Seongyeong; Lee, Jeong Eun; So, Yoon Hwan; Lee, Hoil (2019-10-31). "Fossil-bearing deposits in the Jinju Formation at Jinju: Occurrences, paleoenvironments and stratigraphic implications" (PDF) . Journal of the Geological Society of Korea . 55 (5): 513–530. doi :10.14770/jgsk.2019.55.5.513 . ISSN 0435-4036 . S2CID 210608913 .
^ a b 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 .
^ Baek, Kwang-Seok; Yang, Seung-Yeong (2004). "Cockroaches from the early Cretaceous of Korea (Blattaria: Mesoblattinidae)" . Journal of the Paleontological Society of Korea (in Korean). 20 : 71–98 – via DBpia.
^ Nam, K.S.; Park, T.Y.; Kim, Y.H. (2013-12-31). "Preliminary research on the aquatic coleopteran, Coptoclava from the Early Cretaceous Jinju Formation" . Journal of the Geological Society of Korea . 49 (6): 617–624. doi :10.14770/jgsk.2013.49.6.617 .
^ a b Sohn, Jae-Cheon; Nam, Gi Soo; Choi, Sei-Woong; Ren, Dong (2019-12-11). Robillard, Tony (ed.). "New fossils of Elateridae (Insecta, Coleoptera) from Early Cretaceous Jinju Formation (South Korea) with their implications to evolutionary diversity of extinct Protagrypninae" . PLOS ONE . 14 (12): e0225502. Bibcode :2019PLoSO..1425502S . doi :10.1371/journal.pone.0225502 . ISSN 1932-6203 . PMC 6905514 . PMID 31826006 .
^ Sohn, Jae-Cheon; Nam, Gi Soo (2021). "New fossil genus and species of carrion beetle (Coleoptera, Silphidae) from the Lower Cretaceous Jinju Formation, South Korea" . Journal of Asia-Pacific Entomology . 24 (3): 584–587. doi :10.1016/j.aspen.2021.05.003 . S2CID 236585083 .
^ Lee, Soo Bin; Nam, Gi Soo; Li, Yan-Da (2022). "A new species of Notocupes (Coleoptera: Archostemata) from the Lower Cretaceous (Albian) Jinju Formation in South Korea". Cretaceous Research . 140 : 105357. Bibcode :2022CrRes.14005357L . doi :10.1016/j.cretres.2022.105357 . S2CID 252147645 .
^ a b c d Lee, S.B.; Nam, G.S.; Park, J.K.; Lee, B.H.; Li, Y.-D. (2023). "Cretaceous beetles of the Jinju Formation (Coleoptera): Archostemata" . Palaeoentomology . 6 (5): 496–506. doi :10.11646/PALAEOENTOMOLOGY.6.5.8 . S2CID 264597717 .
^ Engel, Michael A.; Lim, Jong-Deock; Baek, Kwang-Seok; Martin, Larry D. (2002). "An Earwig from the Lower Cretaceous of Korea (Dermaptera: Forficulina)". Journal of the Kansas Entomological Society . 75 (2): 86–90. JSTOR 25086049 .
^ Khramov, Alexander V.; Nam, Gi-Soo; Vasilenko, Dmitry V. (2020-01-02). "First long-proboscid flies (Diptera: Zhangsolvidae) from the Lower Cretaceous of South Korea" . Alcheringa: An Australasian Journal of Palaeontology . 44 (1): 160–168. Bibcode :2020Alch...44..160K . doi :10.1080/03115518.2019.1664634 . ISSN 0311-5518 . S2CID 213651448 .
^ Sohn, J.-C.; Nam, G. S. (2024). "New fossil genus and species of Yuripopovinidae (Insecta: Heteroptera, Coreoidea) from the Lower Cretaceous Jinju Formation, South Korea, with insights into the evolution of exaggerated antennae in the family". Cretaceous Research . 105847. doi :10.1016/j.cretres.2024.105847 .
^ Rosse-Guillevic, Simon; Rasnitsyn, Alexandr P.; Nam, Gi-Soo; Jouault, Corentin (April 2023). "The first Heloridae (Hymenoptera: Proctotrupoidea) from the Albian of the Republic of Korea: inferences about the relict diversity of the family" . Cretaceous Research . 151 : 105564. Bibcode :2023CrRes.15105564R . doi :10.1016/j.cretres.2023.105564 . S2CID 258269517 .
^ Rosse-Guillevic, Simon; Kopylov, Dmitry S.; Rasnitsyn, Alexander P.; Nam, Gi-Soo; Kwon, Seung-Hyuk; Jouault, Corentin (August 2023). "Blurring the limits of anaxyelid subfamilies: a new genus and species (Hymenoptera: Anaxyelidae) from the Albian of the Republic of Korea" . Palaeoentomology . 6 (4): 424–434. doi :10.11646/palaeoentomology.6.4.13 . S2CID 261307640 .
^ Nam, Kye-Soo; Kim, Jong-Heon (2016). "Reconstruction and Paleoecological implications of Dragonfly Hemeroscopus baissicus Pritykina 1977 (Hemeroscopidae) from the Lower Cretaceous Jinju Formation in the Jinju area, Korea" . Journal of the Geological Society of Korea . 52 (2): 102–112. doi :10.14770/jgsk.2016.52.2.105 .
^ Kim, Do-Yoon; Lee, Mirinae; Nam, Gi-Soo; Park, Tae-Yoon S. (2021). "The first orthopteran fossils from the Lower Cretaceous (Albian) Jinju Formation of Korea: Ethological implications for elcanids" . Cretaceous Research . 125 : 104843. Bibcode :2021CrRes.12504843K . doi :10.1016/j.cretres.2021.104843 .
^ Engel, Michael S; Lim J.-D.; Baek, K.-S. (2006-04-25). "Fossil snakeflies from the Early Cretaceous of southern Korea (Raphidioptera: Mesoraphidiidae)" . Neues Jahrbuch für Geologie und Paläontologie - Monatshefte . 2006 (4): 249–256. doi :10.1127/njgpm/2006/2006/249 . ISSN 0028-3630 .
^ Khramov, A.V.; Nam, G.S. (2020). "The First Record of Lacewings (Insecta: Neuroptera: Mesochrysopidae) from the Lower Cretaceous of South Korea". Paleontological Journal . 54 (6): 613–616. doi :10.1134/S003103012005007X . S2CID 227133826 .
^ Jouault, Corentin; Nam, Gi-Soo (2022-07-07). "A new primitive termite from the lower cretaceous (Albian) Jinju Formation of Korea" . Historical Biology . 35 (9): 1522–1527. doi :10.1080/08912963.2022.2098490 . ISSN 0891-2963 . S2CID 250373231 .
^ Park, Tae-Yoon; Wilson, George D. F.; Lee, Dong-Chan; Choi, Duck K. (2012). "Occurrence of the Isopod Archaeoniscus coreaensis New Species from the Lower Cretaceous Jinju Formation, Korea" . Journal of Paleontology . 86 (4): 626–640. Bibcode :2012JPal...86..626P . doi :10.1666/11-131R.1 . JSTOR 23253719 . S2CID 131617665 .
^ Choi, Byung-Do; Jia, Baoyan; Huh, Min; Jung, Jongyun; Wang, Yaqiong (2021-11-01). "Taxonomy, biostratigraphic and paleoecological aspects of non-marine ostracod fauna from the Jinju Formation (Albian) of the Gyeongsang Basin, South Korea" . Cretaceous Research . 127 : 104944. Bibcode :2021CrRes.12704944C . doi :10.1016/j.cretres.2021.104944 . ISSN 0195-6671 .
^ Choi, Byung-Do; Wang, Ya-Qiong; Huh, Min (2018-09-01). "Cypridea species (Crustacea, Ostracoda) from the Lower Cretaceous Jinju Formation of the Gyeongsang Basin, South Korea" . Palaeoworld . 27 (3): 382–391. doi :10.1016/j.palwor.2018.03.005 . ISSN 1871-174X . S2CID 135191249 .
^ Choi, Byung-Do; Huh, Min (2016-01-01). "Mongolocypris kohi sp. nov.: A new Early Cretaceous non-marine ostracod species from the Jinju Formation, South Korea" . Cretaceous Research . 57 : 239–247. Bibcode :2016CrRes..57..239C . doi :10.1016/j.cretres.2015.09.008 . ISSN 0195-6671 .
^ Park, Sun-Ok; Chang, Ki-Hong (1998). "Some Cretaceous conchostracans of Kyongsang basin". Journal of the Paleontological Society of Korea . 14 (2): 179–199.
^ a b Choi, Seung; Lee, Yuong-Nam (2017). "A review of vertebrate body fossils from the Korean Peninsula and perspectives" . Geosciences Journal . 21 (6): 867–889. Bibcode :2017GescJ..21..867C . doi :10.1007/s12303-017-0040-6 . ISSN 1226-4806 . S2CID 133835817 .
^ 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. S2CID 53309909 .
^ Yabumoto, Yoshitaka; Yang, Seong-Young (2000). "The first record of the Early Cretaceous freshwater fish, Wakinoichthys aokii , from Korea" . Bulletin of the Kitakyushu Museum of Natural History . 19 : 105–110.
^ Kim, Haang-Mook; Chang, Mee-Mann; Wu, Feixiang; Kim, Yang-Hee (2014). "A new ichthyodectiform (Pisces, Teleostei) from the Lower Cretaceous of South Korea and its paleobiogeographic implication" . Cretaceous Research . 47 : 117–130. Bibcode :2014CrRes..47..117K . doi :10.1016/j.cretres.2013.11.007 .
^ a b c d Kim, Jeong Yul; Huh, Min (2018). Dinosaurs, Birds, and Pterosaurs of Korea: A Paradise of Mesozoic Vertebrates (PDF) . Springer Nature. ISBN 978-981-10-6998-7 .
^ Lim, J.-D.; Martin, L.D.; Baek, K.-S. (2001-02-01). "The first discovery of a brachiosaurid from the Asian continent" . Naturwissenschaften . 88 (2): 82–84. Bibcode :2001NW.....88...82L . doi :10.1007/s001140000201 . ISSN 1432-1904 . PMID 11320893 . S2CID 39381123 .
^ Yun, Chan-Gyu (2021). "Boreopterid pterosaur fossils from South Korea reconsidered". New Mexico Museum of Natural History and Science Bulletin . 82 : 567–568.
^ Yun, Chan-Gyu (2024). "Geometric morphometric approach to establish phylogenetic affinities of enigmatic pterosaur specimens from the Lower Cretaceous of South Korea" . Acta Palaeontologica Romaniae . 20 (1): 77–86. doi :10.35463/j.apr.2024.01.06 .
^ Yun, Cheol-Soo; Yang, Seung-Yeong (2004). "Three bivalve fossils from the Dongmyeong Formation of Gisan, Goryeong in Korea" . Journal of the Paleontological Society of Korea . 20 (2): 173–181 – via DBpia.
^ a b Kim, Kyung Soo; Kim, Jeong Yul (2008). "Lockeia gigantus ichnosp. nov. in the Lacustrine Deposits of the Early Cretaceous Jinju Formation, Southern Coast of Korea" (PDF) . Journal of the Korean Earth Society . 29 (1): 13–28. doi :10.5467/JKESS.2008.29.1.013 . ISSN 1225-6692 .
^ a b c Kim, Kyung Soo; Lim, Jong Deock; Lockley, Martin G.; Xing, Lida; Ha, Su Jin; Kim, Cheong Bin; Paik, In Sung; Ahn, Jae Hong; Mun, Seok Chan (2018). "First reports of a distinctive theropod track assemblage from the Jinju Formation (Lower Cretaceous) of Korea provides strong correlations with China" . Cretaceous Research . 81 : 26–35. Bibcode :2018CrRes..81...26K . doi :10.1016/j.cretres.2017.08.005 .
^ Kim, Kyung Soo; Lim, Jong Deock; Lockley, Martin G.; Xing, Lida; Kim, Dong Hee; Piñuela, Laura; Romilio, Anthony; Yoo, Jae Sang; Kim, Jin Ho; Ahn, Jaehong (2018-11-15). "Smallest known raptor tracks suggest microraptorine activity in lakeshore setting" . Scientific Reports . 8 (1): 16908. Bibcode :2018NatSR...816908K . doi :10.1038/s41598-018-35289-4 . ISSN 2045-2322 . PMC 6237872 . PMID 30442900 .
^ Kim, Jeong Yul; Lockley, Martin G.; Woo, Jeong Ok; Kim, Sam Hyang (2012). "Unusual didactyl traces from the Jinju Formation (Early Cretaceous, South Korea) indicate a new ichnospecies of Dromaeosauripus ". Ichnos: An International Journal for Plant and Animal Traces . 19 (1–2): 75–83. Bibcode :2012Ichno..19...75K . doi :10.1080/10420940.2012.664054 . S2CID 129875076 .
^ a b Kang, Seung Hyeop; Buckley, Lisa G.; McCrea, Richard T.; Kim, Kyung-Soo; Lockley, Martin G.; Lim, Jong Deock; Lim, Hyun Soo; Kim, Cheong-Bin (2021). "First report of bird tracks (Ignotornis seoungjoseoi ichnosp. nov.) from the Jinju Formation (Lower Cretaceous), Sacheon City, Korea". Cretaceous Research . 127 (11): 104899. Bibcode :2021CrRes.12704899K . doi :10.1016/j.cretres.2021.104899 .
^ Kim, Kyung Soo; Lim, Jong Deock; Lockley, Martin G.; Xing, Lida; Choi, Yeongi (2017). "Korean trackway of a hopping, mammaliform trackmaker is first from the Cretaceous of Asia" . Cretaceous Research . 74 : 188–191. Bibcode :2017CrRes..74..188K . doi :10.1016/j.cretres.2017.02.005 .
^ Kim, Kyung Soo; Lim, Jong Deock; Lockley, Martin G.; Kim, Dong Hee; Pinuela, Laura; Yoo, Jae Sang (2019). "Largest Cretaceous lizard track assemblage, new morphotypes and longest trackways comprise diverse components of an exceptional Korean Konservat-Lagerstätten ichnofauna" . Scientific Reports . 9 (1): 13278. Bibcode :2019NatSR...913278K . doi :10.1038/s41598-019-49442-0 . PMC 6746761 . PMID 31527673 .
^ a b Kim, Kyung Soo; Lockley, Martin G.; Lim, Jong Deock; Kim, Dong Hee (2019). "The oldest known anuran (frog) trackways from the Jinju Formation, Lower Cretaceous, Korea" . Cretaceous Research . 96 : 142–148. Bibcode :2019CrRes..96..142K . doi :10.1016/j.cretres.2018.12.008 . S2CID 134521999 .
^ Kim, J.-Y.; Lockley, M. (2016). "First report of turtle tracks from the Lower Cretaceous of Korea". Cretaceous Research . 64 : 1–6. doi :10.1016/j.cretres.2016.03.014 .
^ Lockley, Martin G.; Lim, Jong Deock; Park, Hong Deock; Romilio, Anthony; Yoo, Jae Sang; Choi, Ji Won; Kim, Kyung Soo; Choi, Yeongi; Kang, Seung-Hyeop; Kim, Dong Hee; Kim, Tae Hyeong (2020-07-01). "First reports of Crocodylopodus from East Asia: implications for the paleoecology of the Lower Cretaceous" . Cretaceous Research . 111 : 104441. Bibcode :2020CrRes.11104441L . doi :10.1016/j.cretres.2020.104441 . ISSN 0195-6671 . S2CID 216164973 .
^ a b Kim, Kyung Soo; Lockley, Martin G.; Lim, Jong Deock; Bae, Seul Mi; Romilio, Anthony (2020-06-11). "Trackway evidence for large bipedal crocodylomorphs from the Cretaceous of Korea" . Scientific Reports . 10 (1): 8680. Bibcode :2020NatSR..10.8680K . doi :10.1038/s41598-020-66008-7 . ISSN 2045-2322 . PMC 7289791 . PMID 32528068 .
^ Kirkland, James I. [@Paleojim] (June 23, 2022). "I am shocked at the degree of lumping needed to assign this ichnotaxon to Batrachopus ... Over splitting is certainly a problem with tracks, but this goes a bit too far in the other direction. Otherwise a very interesting and important paper. Bipedal crocs" (Tweet ) – via Twitter .
^ Ha, Sujin; Kim, Kyung Soo; Lim, Hyoun Soo; Lockley, Martin G.; Yoo, Jae Sang; Lim, Jong Deock (2022-03-01). "Diminutive pterosaur tracks and trackways (Pteraichnus gracilis ichnosp. nov.) from the Lower Cretaceous Jinju Formation, Gyeongsang Basin, Korea" . Cretaceous Research . 131 : 105080. Bibcode :2022CrRes.13105080H . doi :10.1016/j.cretres.2021.105080 . ISSN 0195-6671 . S2CID 240322960 .
^ Ha, Sujin; Chae, Yong-Un; Lim, Jong Deock; Kim, Cheong-Bin; Lim, Hyoun Soo; Kim, Kyung Soo (2018-10-30). "Cretaceous Pterosaur Tracks in Daegok-ri, Ulju-gun, Ulsan: Spatio-temporal Distribution of Pterosaur in the Korean Peninsula" . Journal of the Korean Earth Science Society . 39 (5): 458–472. doi :10.5467/JKESS.2018.39.5.458 . ISSN 1225-6692 . S2CID 133982306 .
^ Lee, Dong-Chan (2017). "Radialimbricatus , a new ichnogenus from the lacustrine sandstone facies of the Lower Cretaceous Jinju Formation, South Korea". Alcheringa: An Australasian Journal of Palaeontology . 41 (3): 350–364. Bibcode :2017Alch...41..350L . doi :10.1080/03115518.2017.1283053 . S2CID 132462007 .
^ Kim, J.Y.; Kim, K.S.; Pickerill, R.P. (2000). "Trace Fossil Protovirgularia McCoy, 1850 from the Nonmarine Cretaceous Jinju formation of the Sacheon area, Korea" (PDF) . Journal of the Korean Earth Science Society . 21 (6): 695–702. S2CID 127766832 .
^ Metz, R. (2003). "Nonmarine Cretaceous Protovirgularia : Possible Dragonfly Larva Tracemaker". Ichnos . 9 (1–2): 75–76. Bibcode :2003Ichno...9...75M . doi :10.1080/10420940190034094 . S2CID 128815122 .
^ Lee, Dong-Chan (2018). "Probable insect cocoon or pupation chamber in a channel-fill sandstone bed of the Lower Cretaceous Jinju Formation, South Korea". Lethaia . 51 (3): 433–443. doi :10.1111/let.12257 .
^ a b c d e f Kim, J.Y.; Pickerill, R. (2002). "Cretaceous Nonmarine Trace Fossils from the Hasandong and Jinju Formations of the Namhae Area, Kyongsangnamdo, Southeast Korea". Ichnos . 9 (1–2): 41–60. doi :10.1080/10420940190034076 .
Bibliography [ edit ]