You are in the forests of Antarctica, 185 million years ago.

The air in the early Jurassic Antarctic forest was surprisingly humid, a sharp contrast to the frozen wasteland you knew from the future. Stepping through the lush, giant ferns, you froze. Ahead, the forest canopy opened into a bright, misty clearing, and there they were: a herd of Glacialisaurus.

There were at least a dozen of these bipedal sauropodomorphs, perhaps twenty feet long from nose to tail, moving with slow, deliberate grace. Their skin was a tapestry of muted green and earthy brown, blending perfectly with the towering conifers.