Gorgo #23

A scientist named Dr. Howarth had invented a time machine. He took pity on Gorgo and decided the best thing to do was use his machine to send Gorgo back to the prehistoric era where he could be with his kind. However he accidently gets transported back with Gorgo. They see numerous dinosaurs with Gorgo saving Howarth from a Ceratosaurus and later a monster Pterodactyl. The radiation from the machine wears off and the two slowly travel forward in time going through the ice age and an 18th century war in Europe before they return safely to the modern world.