But then, if I dig around in my comic cupboard, I find a story from before Batman was created, written by Lee Falk and drawn by the wonderful Phil Davis. This comic was published 1990 but the material first appeared in the newspapers in the 30s. Mandrake becomes trapped in a special area of the world where time seems to have stood still, and, you guessed it, he's on the run from dinosaurs. The story is even called "The Lost World."
Sounds like it was inspired by Arthur Conan Doyle's novel called, "The Lost World" in which Professor Challenger leads an expedition to an inaccessible plateau in South America populated by dinosaurs and other extinct creatures.

Definitely.