Some great old titles. That era of DC sci fi was probably the height of my comic book consuming. My allowance was all about getting the latest Justice League and Goro the Gorilla and other DC titles
I want to read the story and find out just what good an invisible dinosaur mount is. You can see where it is because both the rider and the dinosaur's shadow aren't invisible, and I'm sure one good bazooka shot could kill it, so you couldn't wreak havoc for very long. It would be fun to ride as long as it didn't decide to eat you, but part of the fun of dinosaurs is watching them.