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.
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Featured creatures: Tyrannosaurus, Anatotitan, Torosaurus, Triceratops (the creature killed by the male Tyrannosaurus), Quetzalcoatlus, Dromaeosaurus, Ankylosaurus, Didelphodon, Dinilysia (the snake), Deinosuchus (the crocodile). The small bipeds attacked by the Dromaeosaurus are either Orodromeus, Parksosaurus or Thescelosaurus. The carcasses of a Tyrannosaur (possibly a juvenile specimen or a smaller species) and a prehistoric mammal can also be seen. This is the largest cast of the series. See more
The Dromaeosaurus shouldn't appear in this episode, as it was already extinct by the time it takes places. Although the animal in the series was never referred to by a proper name (it was perhaps meant to represent a "generic" dromaeosaur), the website later indeed identified it as a Dromaeosaurus. See more
Millions of years of evolution has also created intimate relationships among different types of dinosaurs. Especially the delicate balance between predator...and prey.