(named after the Dragon King of the West Sea).
Named By: J. N. Choiniere, J. M. Clark, C. M. Forster, M. A. Norell, D. A. Eberth, G. M. Erickson, H. Chu & X. Xu - 2013.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Coelurosauria.
Species: A. zhaoi (type).
Size: About 1 meter long for the holotype specimen, but this is of a juvenile, adults would have been larger.
Known locations: China, Xinjiang - Shishugou Formation, Wucaiwan Member.
Time period: Late Jurassic.
Fossil representation: Holotype ( IVPP V15709) represented by a skull, mandibles (lower jaws) and partial post cranial remains including vertebrae, hind legs and partial left fore limb. Holotype specimen is that of a juvenile.
was a genus of coelurosaurian theropod that lived in China during the
late Jurassic period. The holotype remains of are those of an
individual which means that adults would have been a bit bigger and a
little different, though the holotype remains of this genus are still
enough to identify a new dinosaur. The teeth of Aorun
are noted as
being finely serrated or not at all, though it is recognised that
this may be because the holotype specimen is that of a juvenile.
Additionally, Aorun has only twelve teeth in the
the premaxilla has an additional four), while adult forms of other
coelurosaurs are known to have fifteen or more.
Aorun is known from the Shishugou Formation of China, the study of which can give us a clue to what other dinosaurs Aorun came into contact with. For a start, Aorun was not the only coelurosaur, Zuolong was also present. In addition to this other theropods such as Sinraptor, Monolophosaurus and even the basal tyrannosauroid Guanlong were also present. Aorun may have also come into contact with sauropods such as Mamenchisaurus and Bellusaurus as well as very primitive ceratopsians such as Yinlong and stegosaurs such as Jiangjunosaurus. Over the heads of these dinosaurs, pterosaurs such as Sericipterus would have flown.
- A juvenile specimen of a new coelurosaur (Dinosauria: Theropoda) from the Middle–Late Jurassic Shishugou Formation of Xinjiang, People’s Republic of China, J. N. Choiniere, J. M. Clark, C. M. Forster, M. A. Norell, D. A. Eberth, G. M. Erickson, H. Chu & X. Xu - 2013.