Created by writer-editor Stan Lee and penciller-co-plotter Jack Kirby, he first appeared in Fantastic Four vol. 1, #52 (July 1966).
When Stegron the Dinosaur Man leads a stampede of dinosaurs down Broadway and he is stopped by Spider-Man and the Black Panther was my introduction to this awesome character. Stegron tries to escape on a pterodactyl. Instead he is knocked into the water by Spider-Man and sinks like a rock.