This is an Olorotitan - a type of hadrosaur, found in what is now Amur oblast in Russia. At approximately 12 metres long it was one of the largest species of its family. It is also notable for some unique characteristics, such as having 18 vertebrae in the neck, instead of the usual 15. Some scientists consider this to be a hint at the potential evolution of the hadrosaurs, had they not gone extinct - a drift towards sauropod like adaptations.