Charonosaurus or “Charon’s lizard” is a genus of dinosaur from the Late Cretaceous Period, possibly living right to the very end of the Cretaceous Period when dinosaurs became extinct. It was discovered by Godefroit, Zan and Jin in 2000 on the south bank of the Amur River, China. It may have been equally found in Russia as the Amur River divides Russia from China.
Charonosaurus is a large hadrosaur at 42.5 feet long. It is known from a partial skull found in the Late Maastrichtian Yuliangze Formation in northeastern China. The skull resembles that of Parasaurolophus and may have also had a similar hollow crest that projected backwards from the skull. Charonosaurus is one of the largest hadrosaurs known from Asia.