Named By: D. Hone, M. Habib & F. Therrien - 2019.
Classification: Chordata, Reptilia, Pterosauria, Pterodactyloidea, Azdharchidae.
Species: C. boreas (type).
Size: Uncertain due to lack of remains, but largest fossils suggest an upper wingspan approaching 10 meters across.
Known locations: Canada - Dinosaur park Formation.
Time period: Campanian of the Cretaceous.
Fossil representation: Partial post cranial remains of several individuals including juveniles and adults.
is usually treated as one of if not the
largest known pterosaur, and so for a long time any large pterosaur
bones of the azdharchid line (which Quetzalcoatlus
were usually attributed to the genus. These included the growing
numbers of large azdharchid pterosaur bones that were being found
within the Dinosaur Park Formation of Canada. However, as more of
these bones were found and looked at more closely it was realised that
while they belong to a large azdharchid pterosaur, they actually
represented a whole new genus. In 2019 these fossils were used to
establish the pterosaur genus Cryodrakon.
As mentioned, Cryodrakon was a large pterosaur of the azdharchid line. In fact Cryodrakon seems to have been one of the largest pterosaurs so far known, with larger fossils of Cryodrakon suggesting that larger adults could have had wingspans approaching ten meters across. This would make Cryodrakon only a little bit smaller than Quetzalcoatlus, and larger than most other pterosaurs.
- Cryodrakon boreas, gen. et sp. nov., a Late Cretaceous Canadian azhdarchid pterosaur. - Journal of Vertebrate Paleontology. 39 (3): e1649681. - D. Hone, M. Habib & F. Therrien - 2019.