But let’s not take my word for it. In 1917, Charles Hazelius Sternberg, the amateur paleontologist, wrote a book about hunting for dinosaur bones in the Western United States. Discussing Gorgosaurus libratus, a type of tyrannosaur, he wrote: “Fierce indeed must he have looked, when he slunk up on his prey, his eyes flashing cruelty, with glistening teeth also, and forked tongue.”
With that stipulated, take a look at these Victorian drawings taken from natural history books. Note that the dinosaur and dinosaur-like creatures had spiked, protruding, and/or forked tongues.