You are in the riverbanks of Europe, 220 million years ago.

The air was thick, hot, and smelled of mud and stagnant water. The seasonal, narrow river had reduced to a series of shallow, drying pools. You stood near the bank, watching the murky water.

Suddenly, just under the surface, a massive, flat shape materialized. It was a Metoposaurus, nearly 10 feet long, barely visible in the shallow water. Its head, shaped like a giant, flat toilet seat, was partially covered in slime and algae, blending perfectly with the mud. You could see the eye sockets, positioned far forward on its snout, staring unblinkingly at the water's edge.

It remained motionless, an ultimate ambush predator. Then, a small school of fish swam too close. In a sudden, explosive motion, the Metoposaurus swung its head sideways, its wide mouth opening to reveal hundreds of small, sharp, needle-like teeth, snapping up the prey instantly. It didn't chase; it just waited, perfectly adapted to the chaos of the drought.