Koreanosaurus

File:Skeletal diagram of Koreanosaurus boseongensis.jpg

In 2003, three specimens of Koreanosaurus were found in the Late Cretaceous-age Seonso Conglomerate from the southern coast of the Bibong-ri dinosaur egg site, Boseong, Korean Peninsula.{{cite news |date=2010-11-01 |script-title=ko:전남대 허민 교수팀, 한국 이름명 공룡 복원 |language=ko |newspaper=Yonhap |url=http://app.yonhapnews.co.kr/YNA/Basic/article/new_search/YIBW_showSearchArticle.aspx?searchpart=article&searchtext=%ED%95%9C%EA%B5%AD%20%EC%9D%B4%EB%A6%84%EB%AA%85%20%EA%B3%B5%EB%A3%A1%20%EB%B3%B5%EC%9B%90&contents_id=AKR20101101147300054 |url-status=dead |access-date=2011-05-04 |archive-url=https://web.archive.org/web/20111002085355/http://app.yonhapnews.co.kr/YNA/Basic/article/new_search/YIBW_showSearchArticle.aspx?searchpart=article&searchtext=%ED%95%9C%EA%B5%AD%20%EC%9D%B4%EB%A6%84%EB%AA%85%20%EA%B3%B5%EB%A3%A1%20%EB%B3%B5%EC%9B%90&contents_id=AKR20101101147300054 |archive-date=2011-10-02}} These specimens include the holotype KDRC-BB2, a partial upper skeleton lacking the skull, and two additional specimens which contains portions of the pelvic girdle and lower leg (KDRC-BB1 and KDRC-BB3).{{Cite journal|author1=Min Huh |author2=Dae-Gil Lee |author3=Jung-Kyun Kim |author4=Jong-Deock Lim |author5=Pascal Godefroit |year=2011|title=A new basal ornithopod dinosaur from the Upper Cretaceous of South Korea |journal=Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen|volume=259 |issue=1 |pages=1–24 |doi=10.1127/0077-7749/2010/0102|url=http://doc.rero.ch/record/232922/files/PAL_E4536.pdf }} The type species was named after its locality (Boseong site 5). This taxon was initially named and described in a master's thesis by Dae-Gil Lee in 2008,Lee G., 2008, The ornithopod dinosaur (Ornithopoda: Hypsilophodontidae) from the Late Cretaceous Seonso Conglomerate of Boseong County, Korea, Master's thesis, Chonnam National University and was officially published by Min Huh, Dae-Gil Lee, Jung-Kyun Kim, Jong-Deock Lim and Pascal Godefroit in 2011.

Koreanosaurus was a relatively small dinosaur, reaching {{convert|2|-|2.4|m|ft|sp=us}} in body length.{{cite web|last1=Huh|first1=M.|last2=Kim|first2=J.G.|year=2010|title=Koreanosaurus boseongensis|publisher=한국고생물학회 정기총회 및 학술발표회|pages=21–26|url=https://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE01566273|language=ko}}{{cite book |last=Holtz |first=Thomas R. Jr. |year=2012 |title=Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages |url=http://www.geol.umd.edu/~tholtz/dinoappendix/HoltzappendixWinter2011.pdf |quote=Winter 2011 Appendix}} Based on its taxonomic position and the existence of small burrows from the Seonso Conglomerate, Koreanosaurus is likely a burrowing dinosaur. Unlike its orodromine relatives, Koreanosaurus is assumed to have been a quadruped.{{cite journal|last1=Fearon|first1=J.L.|last2=Varricchio|first2=D.J.|year=2015|title=Morphometric analysis of the forelimb and pectoral girdle of the Cretaceous ornithopod dinosaur Oryctodromeus cubicularis and implications for digging|journal=Journal of Vertebrate Paleontology|volume=35|issue=4|pages=e936555|doi=10.1080/02724634.2014.936555|bibcode=2015JVPal..35E6555F }}

File:Koreanosaurus.png

Koreanosaurus was considered to be a basal member of the Ornithopoda by the authors, forming a clade with Zephyrosaurus schaffi, Orodromeus makelai and Oryctodromeus cubicularis from which they deduced a burrowing lifestyle. In 2012, Han et al. found it plausible that Koreanosaurus might be a member of Jeholosauridae or closely related to it.{{cite journal |author1=Han, F.-L. |author2=Barrett, P.M. |author3=Butler, R.J. |author4=Xu, X. |year=2012 |title=Postcranial anatomy of Jeholosaurus shangyuanensis (Dinosauria, Ornithischia) from the Lower Cretaceous Yixian Formation of China. |journal=Journal of Vertebrate Paleontology |volume=32 |issue=6 |pages=1370–1395 |doi=10.1080/02724634.2012.694385 |bibcode=2012JVPal..32.1370H |s2cid=86754247 }} Subsequent phylogenetic analyses by researchers including Han et al. consistently classified Koreanosaurus as a member of Thescelosauridae,{{Cite journal|author1=Han, F.-L. |author2=Forster, C.A. |author3=Xu, X. |author4=Clark, J.M. |year=2017 |title=Postcranial anatomy of Yinlong downsi (Dinosauria: Ceratopsia) from the Upper Jurassic Shishugou Formation of China and the phylogeny of basal ornithischians |journal=Journal of Systematic Palaeontology |volume=16 |issue=14 |pages=1159–1187 |doi=10.1080/14772019.2017.1369185 |s2cid=90051025 }} specifically within the subfamily Orodrominae.{{cite journal | title=The systematic relationships and biogeographic history of ornithischian dinosaurs | author=Boyd, C.A. | journal=PeerJ | year=2015 |volume=3 |issue=e1523 | pages=e1523 | doi=10.7717/peerj.1523| pmc=4690359 | pmid=26713260 | doi-access=free }}{{cite journal|last1=Madzia|first1=Daniel|last2=Boyd|first2=Clint A.|last3=Mazuch|first3=Martin|title=A basal ornithopod dinosaur from the Cenomanian of the Czech Republic|journal=Journal of Systematic Palaeontology|volume=16|issue=11|date=2017|pages=967–979|doi=10.1080/14772019.2017.1371258 |s2cid=90008574|url=https://figshare.com/articles/dataset/A_basal_ornithopod_dinosaur_from_the_Cenomanian_of_the_Czech_Republic/5436457 }}{{cite journal |vauthors=Dieudonné PE, Cruzado-Caballero P, Godefroit P, Tortosa T |title=A new phylogeny of cerapodan dinosaurs |journal=Historical Biology |date=2020 |volume=33 |issue=10 |pages=2335–2355 |doi=10.1080/08912963.2020.1793979 |doi-access=|bibcode=2021HBio...33.2335D }}{{Cite journal|last1=Fonseca |first1=A. O. |last2=Reid |first2=I. J. |last3=Venner |first3=A. |last4=Duncan |first4=R. J. |last5=Garcia |first5=M. S. |last6=Müller |first6=R. T. |year=2024 |title=A comprehensive phylogenetic analysis on early ornithischian evolution |journal=Journal of Systematic Palaeontology |volume=22 |issue=1 |at=2346577 |doi=10.1080/14772019.2024.2346577 |bibcode=2024JSPal..2246577F }}

{{Reflist}}

{{Ornithischia|O.}}

{{Taxonbar|from1=Q1360752|from2=Q20718552}}

Category:Thescelosauridae

Category:Ornithischian genera

Category:Campanian life

Category:Santonian life

Category:Late Cretaceous dinosaurs of Asia

Category:Cretaceous South Korea

Category:Fossil taxa described in 2011