- Do not confuse with Ancient Godzilla.
The Prehistoric Godzilla which Queen Quirus fought aproximately 65,000,000 years ago is a radiated Godzillasaurus. It only appears in flashbacks of Queen Quirus.
When the asteroid that caused the K-T extinction hit the Earth, many caves collapsed on top of dinosaurs, trees started to burn, and dinosaurs died. However, this Godzillasaurus was chasing a terrorized ankylosaurus (Quirus) to a cave with a gas leak when the meteor struck. The gas and the explosion caused by the meteor mutated them. The cave collapsed on them, but they fell unconcious. They woke up a couple of millions of years and by instinct, they fought to the death. Quirus remained victorious and that's when the most recent ice age appeared. She could not stand the cold and passed out for thousands of years to come.