In 1990 , fossil hunters found the most intact T Rex skeleton . On the morning of August 12 , 1990 , the Black Hills fossil hunter team 's Suburban broke down The discovery led to a massive debate over who owned it . Eventually , federal agents seized the T - Rex . CNN Films ' ` ` Dinosaur 13 '' aired Thursday , December 13 , at noon ET .
In 1990 , fossil hunters found the most intact T Rex skeleton . The discovery led to a massive debate over who owned it . Eventually , federal agents seized the T - Rex . CNN Films ' ` ` Dinosaur 13 '' aired Thursday , December 13 , at noon ET .