Phu Wiang National Park (PWNP) is located in Phu Wiang District, Khon Kaen Province, northeastern Thailand. It is best known for its numerous dinosaur bone paleontological sites,[1] The park is one of the world's largest dinosaur graveyards.[2] In 1996, the remains of Siamotyrannus isanensis, a new family of carnivorous thunder lizards, were unearthed in the par