The cover is completely unrelated to the story, but when has that ever stopped us?
This is issue #73, which was the final issue of Planet Comics
Grim Danger In A Lost World
Warning: Past May Contain Dinosaurs
Also includes Race Around The Moon, and a prize for the best story written about this cover, presumably because The Warning From The Past wasn’t very good, although it wasn’t the first time someone ran this contest.
The Story Of Daarmajd, The Strong, Mighty King Of The Prehistoric World