(Beishan dragon - Bei shan translates as white mountains, so an
alternative interpretation is White mountains dragon).
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.
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
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.
(with new discoveries this list is likely to change)
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)
- 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.