Tacnosaurus rex
Amimalia Chordata Vertebrata Reptilia Eureptilia Diapsida Archosauromorpha Dinosauria Saurischia Theropoda Tetanurae Coelurosauria Tacnosauroidea Tacnosauridae Tacnosaurinae Tacnosaurus
Amimalia Chordata Vertebrata Reptilia Eureptilia Diapsida Archosauromorpha Dinosauria Saurischia Theropoda Tetanurae Coelurosauria Tacnosauroidea Tacnosauridae Tacnosaurinae Tacnosaurus