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sized, basal, ankylopollexian, east, shedding, light, biogeographic, 563, 36658842, pmid, 2095, 9273, issn, 1016, scib, 016, 2018scibu, 556x, 556, science, bulletin, wenhao, 2012, anatomy, relationships, indiana, university, press, 333, 978, 253, 00570, isbn, 292, bernissart, terrestrial, ecosystems, zheng, wenjie, jin, xingsheng, shibata, masateru, azuma, yoichi, march, 2014, juvenile, ningcheng, county, nei, mongol, 251, 1080, 08912963, 809347, 2014hbio, 236z, 236, historical, biology, gen, nov, new, 133, 127, geology, resources, describers, placed, would, one, hadrosauroids, basalmost, gait, disputed, wrist, bones, were, fused, together, suggesting, well, adapted, bearing, though, distal, reminiscent, quadrupeds, suggests, facultative, quadruped, spent, its, time, walking, bipedally, also, suggested, relative, thigh, shin, however, hind, foot, robust, more, like, fully, bipedal, ones, individuals, had, proportionally, longer, typical, animals, autapomorphy, identified, based, 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bolong wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 discovery and naming 2 description 3 phylogeny 4 references toggle the table of contents bolong 10 languages čeština فارسی français മലയാളം nederlands polski português русский tiếng việt 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia genus of reptiles fossil for other uses see bolong disambiguation bolong temporal range early cretaceous 125 46 ma preꞓ ꞓ o s d c p t j k pg n fossil in liaoning palaeontological museum scientific classification kingdom animalia phylum chordata class reptilia clade dinosauria clade ornithischia clade ornithopoda clade hadrosauriformes superfamily hadrosauroidea genus bolong wu godefroit hu 2010 species b yixianensis binomial name bolong yixianensis wu godefroit hu 2010 bolong meaning bo s dragon is a genus of iguanodontian dinosaur known from the early cretaceous yixian formation of western liaoning province china 1 it lived about 125 million years ago in the earliest barremian 1 discovery and naming edit reconstructed skeleton it was named by wu wen hao pascal godefroit and hu dong yu in 2010 1 the type species is bolong yixianensis 1 the genus name is derived from the names of the brothers bo hai chen and bo xue who helped uncover it and the mandarin word 龍 lóng dragon the specific epithet refers to the yixian formation where it was found 1 the holotype fossil yhz 001 consists of a nearly complete skeleton 1 in 2013 a second specimen zmnh m8812 was described consisting of an almost complete skeleton of a very young animal it was found by a farmer near the village of xitaizhi in inner mongolia 2 description edit life restoration bolong was a relatively small animal with an estimated length of 4 metres 13 ft and a weight of 200 kilograms 440 lb the head is convex and fairly stocky with powerful mandibles the teeth are relatively large autapomorphies that have been established are a cavity at the interface of the lacrimal bone the maxilla the backwards branch of the prefrontal bone consisting of a front to rear depth cavity above the edges of the eye socket the lower protrusion of the predentarium extending rearwardly parallel to the lower edge the interface of the predentarium that occupies less than two thirds of the height of the dentarium so that the front tip of the dentarium protrudes a third above the predentarium and that the teeth in the maxilla have dental crowns of which the main ridge bends at the tip of the tooth 1 a second autapomorphy was identified based on the second specimen the inside of the maxillary teeth are thickened and enclosed from the front and rear cutting edges and is divided in half by a striking vertical ledge 2 the gait of bolong is disputed the forelimb was fairly short and the wrist bones were not fused together suggesting that the forelimb was not well adapted to bearing much weight though the proportions of the distal forelimb are reminiscent of quadrupeds 3 this suggests that bolong was a facultative quadruped that spent much of its time walking bipedally 3 which is also suggested by the relative proportions of the thigh and shin 4 however the hind foot was short and robust more like fully quadrupedal dinosaurs than bipedal ones 3 very young individuals had a proportionally longer forelimb typical of the proportions of quadrupedal animals 2 phylogeny edit the describers placed bolong in hadrosauroidea it would have been one of the basalmost hadrosauroids found in asia 1 references edit 1 2 3 4 5 6 7 8 wu wen hao pascal godefroit hu dong yu 2010 bolong yixianensis gen et sp nov a new iguanodontoid dinosaur from the yixian formation of western liaoning china geology and resources 19 2 127 133 1 2 3 zheng wenjie jin xingsheng shibata masateru azuma yoichi 4 march 2014 an early juvenile specimen of bolong yixianensis ornithopoda iguanodontia from the lower cretaceous of ningcheng county nei mongol china historical biology 26 2 236 251 bibcode 2014hbio 26 236z doi 10 1080 08912963 2013 809347 1 2 3 wenhao wu godefroit pascal 2012 anatomy and relationships of bolong yixianensis an early cretaceous iguanodontoid dinosaur from western liaoning china in godefroit pascal ed bernissart dinosaurs and early cretaceous terrestrial ecosystems indiana university press pp 292 333 isbn 978 0 253 00570 0 xu xing tan qingwei gao yilong bao zhiqiang yin zhigang guo bin wang junyou tan lin zhang yuguang xing hai 2018 a large sized basal ankylopollexian from east asia shedding light on early biogeographic history of iguanodontia science bulletin 63 9 556 563 bibcode 2018scibu 63 556x doi 10 1016 j scib 2018 03 016 issn 2095 9273 pmid 36658842 dinosaurs portal v t e ornithopoda kingdom animalia phylum chordata clade dinosauria clade ornithischia clade neornithischia clade cerapoda avemetatarsalia see avemetatarsalia ornithischia see ornithischia ornithopoda see below ornithopoda ornithopoda burianosaurus callovosaurus thescelosauridae hypsilophodontidae gideonmantellia hypsilophodon vectidromeus elasmaria anabisetia atlascopcosaurus chakisaurus diluvicursor fostoria galleonosaurus gasparinisaura isasicursor kangnasaurus leaellynasaura macrogryphosaurus mahuidacursor morrosaurus muttaburrasaurus notohypsilophodon qantassaurus sektensaurus talenkauen tietasaura trinisaura weewarrasaurus rhabdodontomorpha ampelognathus emiliasaura foskeia fostoria muttaburrasaurus obelignathus tenontosauridae convolosaurus iani tenontosaurus rhabdodontidae matheronodon mochlodon pareisactus rhabdodon transylvanosaurus zalmoxes dryomorpha draconyx hesperonyx owenodon dryosauridae dryosaurus dysalotosaurus elrhazosaurus eousdryosaurus iyuku kangnasaurus valdosaurus ankylopollexia barilium bayannurosaurus calvarius camptosaurus cedrorestes cumnoria dakotadon emiliasaura fukuisaurus hippodraco iguanacolossus istiorachis lanzhousaurus lurdusaurus magnamanus napaisaurus oblitosaurus osmakasaurus planicoxa proa ratchasimasaurus riabininohadros theiophytalia uteodon hadrosauriformes bolong hypselospinus jinzhousaurus mantellisaurus morelladon ouranosaurus iguanodontidae barilium comptonatus iguanodon mantellisaurus hadrosauroidea see below hadrosauroidea hadrosauroidea altirhinus bactrosaurus batyrosaurus brighstoneus cariocecus choyrodon claosaurus comptonatus datonglong eolambia equijubus fylax gilmoreosaurus gobihadros gongpoquansaurus gonkoken haolong huehuecanauhtlus hypsibema jeyawati jintasaurus koshisaurus levnesovia lophorhothon nanningosaurus nanyangosaurus penelopognathus plesiohadros portellsaurus probactrosaurus protohadros qianjiangsaurus shuangmiaosaurus siamodon sirindhorna tanius xuwulong yunganglong zhanghenglong zuoyunlong telmatosauridae kryptohadros telmatosaurus tethyshadros hadrosauridae aquilarhinus eotrachodon hadrosaurus lapampasaurus malefica yamatosaurus lambeosaurinae adynomosaurus ajnabia angulomastacator aralosaurus arenysaurus blasisaurus canardia jaxartosaurus kazaklambia latirhinus minqaria nipponosaurus pararhabdodon taleta tsintaosaurus parasaurolophini adelolophus charonosaurus parasaurolophus plesiolophus tlatolophus lambeosaurini amurosaurus corythosaurus hypacrosaurus lambeosaurus magnapaulia olorotitan velafrons saurolophinae barsboldia brachylophosaurini acristavus brachylophosaurus gongshuilong maiasaura ornatops probrachylophosaurus wulagasaurus austrokritosauria bonapartesaurus huallasaurus kelumapusaura secernosaurus kritosaurini ahshislesaurus anasazisaurus coahuilasaurus gryposaurus kritosaurus naashoibitosaurus rhinorex saurolophini augustynolophus prosaurolophus saurolophus edmontosaurini edmontosaurus kamuysaurus kerberosaurus kundurosaurus laiyangosaurus shantungosaurus related articles ichnotaxa amblydactylus anomoepus bonaparteichnium camptosaurichnus caririchnium dakotasaurus dinehichnus hadrosaurichnus iguanodontipus orcauichnites ornithopodichnites shiraminesauropus sousaichnium staurichnium tetrapodosaurus wintonopus ootaxa guegoolithus nomina dubia arstanosaurus cionodon claorhynchus diclonius eucercosaurus fulgurotherium glishades koutalisaurus loncosaurus mandschurosaurus microhadrosaurus ornithotarsus orthomerus pteropelyx siluosaurus stephanosaurus syngonosaurus thespesius tichosteus trachodon willinakaqe other articles arkharavia basturs poble bonebed dakota fossil hadrosaur diet hypsilophodont list of informal dinosaur names contains hadrosaur nomina nuda timeline of hadrosaur research edmontosaurus mummy amnh 5060 edmontosaurus mummy s m r4036 taxon identifiers bolong wikidata q1705570 eol 47459879 paleobiology database 173565 retrieved from https en wikipedia org w index php title bolong oldid 1365996748 categories hadrosauroidea dinosaur genera barremian dinosaurs yixian formation fossil taxa described in 2010 taxa named by pascal godefroit dinosaurs of china hidden categories articles with short description short description matches wikidata articles with species microformats this page was last edited on 25 july 2026 at 17 24 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy 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