Montana, USA- 65,5 million years B.C. In the last days of the dinosaurs' hegemony over the world, a female Tyrannosaurus struggles to reproduce in a world poisoned by volcanic gases, which has resulted in dwindling prey numbers.
Did You Know?
The program's depiction of the Ankylosaurus and Quetzalcuatlus have both been based on models that by now have become outdated. These are not considered errors, since new discoveries have been made since the series had been finished, however it does mean that slowly all of the animal designs that appear in the series are becoming obsolete. The Ankylosaurus didn't have that many plates on its back, for instance, but had fewer, larger plates. Whereas the Quetzalcoatlus had a much, much longer neck, a differently shaped head with a different crest on its skull, and no teeth. It also walked more upright, when on the ground. See more
The young Tyrannosaurus's teeth are red before they start eating. See more
There are still islands of greenery between the barren lava flows. In the warm moist climate of the late Cretaceous period, the vegetation has transformed.