Named By: Min Wang, Jingmai K. O’Connor, Xing Xu & Zhonghe Zhou - 2019.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Scansoriopterygidae.
Species: A. longibrachium (type).
Size: Body estimated to be about 32 centimetres long. Possibly longer in older adults, though probably not by much if at all.
Known locations: China, Liaoning - Haifanggou Formation.
Time period: Oxfordian of the Jurassic.
Fossil representation: Almost complete individuals with soft tissue impressions. Individual is possibly a subadult.
is a genus of scansoriopterygid dinosaur that lived in Asia during the
late Jurassic. The name Ambopteryx means 'both
wing’ and this is
a reference to the observations that fossil impressions with the
holotype skeleton show that Ambopteryx was
feathered, but then had
bat-like membranous wings which were not feathered as well. This is
the second time that such a 'wing’ structure has been seen in such
dinosaurs, the genus Yi
has also been reconstructed with bat-like
membranes on the arms.
Ambopteryx was a very small dinosaur, the holotype individual measuring thirty-two centimetres from snout to tip pygostyle, though long tail feathers also grew from the tail, giving the impression that Ambopteryx was longer than it actually was. Ambopteryx also preserves evidence of gastroliths and small bones within what would have been the stomach/gut area of the living animal. These show that Ambopteryx may have been omnivorous, an important discovery as before this scansoriopterygid dinosaurs were thought to be more exclusively omnivorous.
- A new Jurassic scansoriopterygid and the loss of membranous wings in theropod dinosaurs. - Nature. 569 (7755): 256–259. - Min Wang, Jingmai K. O’Connor, Xing Xu & Zhonghe Zhou - 2019.