You are in the floodplains of South America, 235 million years ago.

The air in the Late Triassic river valley was thick and humid, smelling of damp earth and cycads. You were examining a fossil footprint in the mud, barely looking up from your notes. A sudden, intense silence fell over the small mammals chattering nearby.

You looked toward the water’s edge. Twenty feet away, partially submerged in the muddy bank, was a dark, armoured shape. You first made out the snout—a ridge of bone-crushing jaws—and then two cold, reptilian eyes staring directly at you, fixed in a menacing, crocodile-like smirk.

It was a Prestosuchus. Nearly seven meters long, this apex predator wasn't a dinosaur, but the "land crocodile" king of the region.

It didn't move. It simply looked at you, its back armored with heavy bony scutes (osteoderms) partially caked in mud. Its skull was deep and narrow, armed with serrated teeth, perfectly designed for ambush. The beast seemed to be waiting, poised between a sprawling reptile stance and a capable, upright bipedal lunge.

Feeling the immense danger, you backed away slowly, the creature's unblinking, prehistoric gaze following your every move. The Prestosuchus ruled this world, a true titan of the Triassic, and you are merely a fleeting intruder.