The eastern bearded dragon (Pogona barbata), also known as common bearded dragon or simply bearded lizard, is an agamidlizard found in wooded parts of Australia. It is one of a group of species known commonly as bearded dragons. Other common names for this species include Jew lizard and frilly lizard, the latter being a confusion between this and another dragon, the frill-necked lizard (Chlamydosaurus kingii). This species was originally described in 1829 by Georges Cuvier, who named it Amphibolurus barbatus.
Adult males can grow to about 60 cm (24 in) from the snout to the tip of the tail, while females may reach 50 cm (20 in) in overall length.
as for differences, there are sevaral, among which are form and temperament. orientals are serpentine, while western are more dinosaur in shape. most orientals are unwinged, while western have them. more importantly, orientals are associated with water and, in china, responsible for the rain. westerns are usually winged and considered evil. orierntals are usually considered good
I have seen images of xiongnu and early turkic dragons that are chinese in form. nothing about siberia. nor am I familiar with either's mythology relative to them