Ambopteryx

Ambopteryx (meaning "both wing") is a genus of scansoriopterygid dinosaur from the Oxfordian stage of the Late Jurassic of China. It is the second dinosaur to be found with both feathers and bat-like membranous wings. Yi, the first such dinosaur, was described in 2015 and is the sister taxon to Ambopteryx. The holotype specimen is thought to be a sub-adult or adult. The specimen is estimated to have had a body length of and a weight of . The genus includes one species, Ambopteryx longibrachium.

==Discovery and naming== The generic name Ambopteryx is derived from the Latin word ambo meaning "both" and Ancient Greek word πτέρυξ (pteryx) meaning "wing", a reference to the animal's membranous wings and bird-like body plan. The specific name longibrachium is derived from the Latin words longus meaning "long" and brachium meaning "upper arm".