Australia once hosted a prehistoric bestiary worthy of legend. Herds of Diprotodons, wombat relatives the size of cars, grazed the plains. Procoptodons, kangaroos taller than men, bounded across dry forests. Predators like the giant lizard Megalania, stretching 7 meters, stalked the scrub, while the flightless bird Genyornis thundered across the outback. But around 50,000–40,000 years ago, these titans disappeared. The timing coincides with the arrival of modern humans. Archaeological evidence s