Home > Diorama > Timeline > Diorama Timeline > Carboniferous Related Pages Diorama Storyline Read a detailed description of how the Diorama's 300 million years of history unfold. Dinosaur Timeline Learn more about the Carboniferous Period and the dinosaurs who lived at that time. Ride & Show Technology: Show Doors Get a closer look at "Door A" and see how these show doors--really more like massive movable walls--work. Dinosaur Explorer: Edaphosaurus See additional photos and learn more about the Edaphosaurus.