Changes

After everyone is seated in the first theater, the theater itself turns 180 degrees so that guests are facing another large screen. This new screen shows Ellen and Bill standing in almost complete darkness. Although Ellen is confused, Bill explains that they are going to witness the Big Bang, which many scientists believe is how the universe started. Bill tells Ellen that they are about to witness how the universe formed, and that they should probably get out of the way. All of the sudden, the universe explodes and guests see a high speed depiction of how the Earth was created. In the scene, volcanoes erupt, mountains are formed, and vegetation covers the Earth. Bill then emerges from a jungle and tells Ellen that they are "two hundred twenty million years in the Earth's past, give or take a day". When Ellen asks Bill where all the energy is, Bill explains that when the plants and animals that they see around them die, "time, pressure and heat" will turn them into fossil fuels. Bill then says he wants to go explore, and while Ellen is at first hesitant, a dinosaur roaring convinces her to go. Following the six minute film, the theater seats break into six ride vehicles and guests proceed into the next room.

===Primeval Diorama===

After leaving the theater, guests find themselves in the Primeval Diorama, where they can no longer see Ellen and Bill (although they can hear their voices as they proceed through the scene). The first thing that guests hear in the Primeval Diorama is Ellen talking to a roaring dinosaur, who she has mistaken for Bill. After Bill calls her over, the two reunite and move with guests through the scene. The first creatures that guests encounter are a giant millipede and Edaphosaurus. Further on, guests can see a Brontosauruses eating swamp plants. The large dinosaur then sneezes on guests, while nearby, duck-billed Trachodons can be seen bathing in a small body of water.

Up ahead, guests see perhaps the most recognizable scene in the attraction- an Allosaurus and a Stegosaurus fighting on a cliff. Nearby Pteranodons are perched around an erupting volcano. Further on, guests can see Ellen fighting off an Elasmosaurus with a stick. As she defends against the dinosaur she says:

Guests then leave the Audio Animatronic portion of the show, and they enter the second theater.

===Radio Broadcast===

After entering the theater, the attraction’s ride vehicles reassemble and guests hear a radio broadcast. The broadcast says that the year is 55 million B.C. and Willard Scott informs them that the forecast calls for a decrease in the dinosaur population and an increase in mammals. The radio also mentions that cockroaches are “two hundred million years old today", but that an incoming comet might get rid of them. The radio announcer then calls for a traffic report, from which guests learn that the mammals are continuing to boom.