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The program's depiction of the Ankylosaurus and Quetzalcuatlus have both been based on models that by now have become outdated.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
In the establishing shot of the Anatotitan herd browsing through some vegetation near the lake, one of the animals in the background stands atop a fallen tree that is still standing out of the earth. It is possible that the Anatotitan in question was supposed to be animated behind the dead tree, not on it - it would be hard to believe that an animal of this size would climb onto such a fragile piece of wood in order to reach some branches that it could reach anyway with ease. 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.