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
The Arthropleura keeps making clicking sounds with its pincers, even though they never actually come into contact. See more
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.