Name: Beishanlong ‭(‬Beishan dragon‭ ‬-‭ ‬Bei shan translates as white mountains,‭ ‬so an alternative interpretation is White mountains dragon‭)‬.
Phonetic: Bay-shan-long.
Named By: Peter J.‭ ‬Makovicky,‭ ‬Li Daiqing,‭ ‬Gao Keqin,‭ ‬Matthew Lewin,‭ ‬Gregory Erickson and Mark A.‭ ‬Norrell‭ ‬-‭ ‬2010.‭
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬Theropoda,‭ ‬Maniraptoriformes,‭ ‬Ornithomimosauria.
Species: B.‭ ‬grandis‭ (‬type‭)‬.
Diet: Uncertain,‭ ‬but possibly an omnivore as has been presumed for other ornithomimosaurs.
Size: Estimated at up to‭ ‬8‭ ‬meters long.‭ ‬Analysis of remains suggests that they were of a subadult and the dinosaur grew slightly larger.
Known locations: China,‭ ‬Gansu Province.
Time period: Aptian/Albian of the Cretaceous.
Fossil representation: A few individuals but of partial post cranial remains.

       The remains of‭ ‬Beishanlong are quite incomplete,‭ ‬but they do tell us that this was an ornithomimosaur and a particularly large one at that.‭ ‬The team of palaeontologists that described the first specimens came up with an estimated length of up to eight meters long,‭ ‬but further study yielded the discovery that the dinosaur the remains came from was not fully grown at the time of death and was still near approaching adult size.‭ ‬This means that while Beishanlong may have easily been as large of other large ornithomimids like Gallimius,‭ ‬it may have even exceeded them.‭
       Although the skull of Beishanlong remains unknown at the time of writing,‭ ‬it’s possible that it may have retained teeth within a keratinous beak like other primitive ornithomimosaur forms such as Harpymimus and Pelecanimimus.‭ ‬This idea is based upon comparison to other ornithomimosaur forms which are known from the early/mid Cretaceous period.‭ ‬In later genera such as Ornithomimus and Struthiomimus the teeth would be lost completely,‭ ‬something which is the root cause of the confusion regarding what ornithomimosaurs ate.

List of some ornithomimosaurs
(with new discoveries this list is likely to change)
Anserimimus‭ (‬Goose mimic‭)
Archaeornithomimus‭ (‬Ancient bird mimic)
Beishanlong‭ (‬Beishan/White mountains dragon)‭
Deinocheirus‭ (‬Terrible hand‭)
Gallimimus‭ (‬Chicken mimic‭)
Garudimimus‭ (‬Garuda mimic‭)
Harpymimus‭ (‬Harpy mimic‭)
Kinnareemimus‭ (‬Kinnaree mimic‭)
Ornithomimus‭ (‬Bird mimic‭)
Pelecanimimus‭ (‬Pelican mimic‭)
Qiupalong‭ (‬Qiupa dragon‭)
Shenzhousaurus‭ (‬Shenzhous lizard‭)
Sinornithomimus‭ (‬Chinese bird mimic‭)
Struthiomimus‭ (‬Ostrich mimic‭)

Further reading
- A giant ornithomimosaur from the Early Cretaceous of China - Proceedings of the Royal Society B: Biological Sciences 277 (1679): 191–198 - Peter J. Makovicky, Daqing Li, Ke-Qin Gao, Matthew Lewin, Gregory M. Erickson, Mark A. Norell - 2010.


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