Gorgosaurus libratus

Holtz, TR jr., 2004, Tyrannosauroidea, The Dinosauria, University of California Press, pp. 111-136 : 112

G. libratus Lambe, 1914c

(including G. sternbergi Matthew et Brown, 1923 ;

Laelaps incrassatus Cope, 1876a ;

?Deinodon horridus Leidy, 1856 ;

?Laelaps falculus Cope, 1876a ;

?Laelaps hazenianus Cope, 1876b ;

?Dryptosaurus kenabekides Hay, 1899 )

Dinosaur Park Formation (Alberta), Canada; Judith River Formation (Montana), Fruitland Formation (Arizona), United States middle–late Campanian At least 12 complete or partial skulls, many partial skeletons Tyrannosaurinae Matthew et Brown, 1922 Daspletosaurus Russell, 1970a