The reptiles evolve, and the race for survival continues on land. Giant arthropods lurk in the Carboniferous forest, and sail-backed mammal-like reptiles fight for the survival of their young in the Permian.
Did You Know?
The computer-generated model used for the Dimetrodon hatchlings is actually drastically smaller version of the fully grown Dimetrodon animation, with apparently the same body proportions and color-scheme. So when one of them (the newly hatched animals) is shown climbing up a tree, the viewer is treated to a rather awkward sight, since it looks just like an adult, to which of course it wouldn't be possible to climb up a tree. See more
As the female Dimetrodon starts eating the Edaphosaurus carcass, she leans ever so slightly backwards. Then she lowers her head again, but this motion follows the exact same pattern as the backwards-leaning motion - the animation is simply reversed, creating a slightly odd effect. The other parts of the animal, like her tail, continue in their motion, so only the animation used for the head has been reversed. See more
Kenneth Branagh - Narrator
The rising water levels suit one group of hunters: amphibians. They've continued thriving over the last sixty million years. Their thin skin still restricts them to the water's edge, but they're now powerful predators, with a devastating pair of jaws, ready to ambush anything that wanders within reach.