 The name Deinodontidae was coined by Edward Drinker Cope in 1866 for this family , and continued to be used in place of the newer name Tyrannosauridae through the 1960s . The type genus of the Deinodontidae is Deinodon , which was named after isolated teeth from Montana . However , in a 1970 review of North American tyrannosaurs , Dale Russell concluded that Deinodon was not a valid taxon , and used the name Tyrannosauridae in place of Deinodontidae , stating that this was in accordance with ICZN rules . Therefore , Tyrannosauridae is preferred by modern experts . 
