Raptorex Raptorex Raptorex is a dubious genus of tyrannosaurid dinosaur. Its fossil remains consist of a single juvenile specimen probably uncovered in Mongolia, or possibly northeastern China. The type species is "R. kriegsteini", described in 2009 by Sereno and colleagues. The genus name is derived from Latin ', "robber", and ', "king". The specific name honours Roman Kriegstein, a survivor of the Holocaust, whose son Henry Kriegstein donated the specimen to the University of Chicago for scientific study. While initially considered to have come from the Yixian Formation of China, dated to approximately 125 million years ago during the early Cretaceous
Tyrannosaurus "Tyrannosaurus" excavation providing daily reports, photos, and video. In 2006, Montana State University revealed that it possessed the largest "Tyrannosaurus" skull yet discovered (from a specimen named MOR 008), measuring long. Subsequent comparisons of heads indicated that the longest was (from specimen LACM 23844) and the widest head was (from Sue). "Tyrannosaurus" is the type genus of the superfamily Tyrannosauroidea, the family Tyrannosauridae, and the subfamily Tyrannosaurinae; in other words it is the standard by which paleontologists decide whether to include other species in the same group. Other members of the tyrannosaurine subfamily include the North American "Daspletosaurus" and the