By biggest I mean longest heaviest specimen What a beast! #Tyrannosaurus rex, “Tyrant Lizard King,” named by Osborn in 1905, lived in the Late #Cretaceous of western North America from around 68 to 66 mya. Its reign ended compliments of a gigantic space rock, otherwise its descendants would likely still be dominating the landscape. How much longer and heavier would they have grown? Could there have been an “arms race” (heh) with #hadrosaur and #ceratopsian #dinosaurs? Would they have continued g