Name: Zhanghenglong ‭(‬Zhang Heng’s dragon‭)‬.
Phonetic: Zang-heng-long.
Named By: Xing Hai,‭ ‬Wang Deyou,‭ ‬Han Fenglu,‭ ‬Corwin Sullivan,‭ ‬Ma Qingyu,‭ ‬He Yiming,‭ ‬David Hone,‭ ‬Yan Ronghao,‭ ‬Du Fuming‭ & ‬Xu Xing‭ ‬-‭ ‬2014.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Ornithopoda,‭ ‬Hadrosauroidea.
Species: Z.‭ ‬yangchengensis‭ (‬type‭)‬.
Diet: Herbivore.
Size: Holotype roughly estimated at somewhere between‭ ‬5.5‭ ‬and‭ ‬6‭ ‬meters long.
Known locations: China,‭ ‬Henan Province,‭ ‬Xixia County‭ ‬-‭ ‬Majiacun Formation.
Time period: Santonian of the Cretaceous.
Fossil representation: Partial remains including right maxilla‭ (‬tooth bearing bone of the skull‭)‬,‭ ‬right jugal and right dentary‭ (‬lower left jaw bone‭)‬.‭ ‬Post cranial remains including dorsal‭ (‬back‭) ‬vertebrae,‭ ‬ribs,‭ ‬shoulder and ulna‭ (‬lower forearm bone‭) ‬have also been attributed to the genus.

       Zhanghenglong was described at the time of its description as a non-hadrosaurid hadrosauroid,‭ ‬which translated into simpler terms is a primitive hadrosaur.‭ ‬Hadrosauroids like Zhanghenglong were descended from the older iguanodont ornithopods that rose to prominence during late Jurassic and early Cretaceous.‭ ‬By the earlier stages of the late cretaceous that had evolved into the hadrosauroids like Zhanghenglong,‭ ‬which by the later stages of the Late Cretaceous would develop into hadrosaurids.‭ ‬Though not much is known,‭ ‬the fossils of Zhanghenglong show that as a genus Zhanghenglong would have still been transitional in form between hadrosauroids and hadrosaurids,‭ ‬with a couple of known hadrosaurid features,‭ ‬though still not enough to see it classified as a hadrosaurid.
       Zhanghenglong was named after the Chinese scientist Zhang Heng who lived in China during the first century.‭ ‬The‭ ‘‬long‭' ‬part of the name is the Mandarin word for‭ ‘‬dragon‭'‬.‭ ‬Other dinosaurs that Zhanghenglong may have‭ ‬encountered include the troodontid Xixiasaurus and the alvarezsaur Xixianykus.

Further reading
-‭ ‬A New Basal Hadrosauroid Dinosaur‭ (‬Dinosauria:‭ ‬Ornithopoda‭) ‬with Transitional Features from the Late Cretaceous of Henan Province,‭ ‬China.‭ ‬-‭ ‬PLoS ONE‭ ‬9‭ (‬6‭)‬:‭ ‬e98821‭ ‬-‭ ‬Xing Hai,‭ ‬Wang Deyou,‭ ‬Han Fenglu,‭ ‬Corwin Sullivan,‭ ‬Ma Qingyu,‭ ‬He Yiming,‭ ‬David Hone,‭ ‬Yan Ronghao,‭ ‬Du Fuming‭ & ‬Xu Xing‭ ‬-‭ ‬2014.


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