Before Big Cats, Giant Crocs Ruled South America's Prehistoric Food Chain
What Happened
New fossil research suggests that giant crocodylians, especially the massive Purussaurus neivensis, were the dominant predators in South America over 10 million years ago during the Miocene epoch. Scientists identified bite marks and puncture wounds on fossilized bones of large herbivores, indicating these giant caiman relatives regularly hunted massive prey. The largest known predator, Purussaurus neivensis, grew to around 7 metres long and 1,800 kg, placing it at the top of the ecosystem ahead of mammalian predators.
Key Takeaways
The study suggests that giant crocodylians were not just scavengers but apex predators that helped shape entire ecosystems, potentially influencing the populations of large herbivores in prehistoric South America.