Scientists Discover a 240-Million-Year-Old Giant Reptile Fossil Inside a 5-Meter Marine Predator
The Daily Galaxy • • science
Key Points:
- A 5-meter-long Guizhouichthyosaurus fossil from China was found containing the remains of a 4-meter marine reptile, providing rare direct evidence that some Triassic ichthyosaurs preyed on very large animals.
- This discovery challenges previous beliefs that ichthyosaurs mainly fed on soft-bodied prey, suggesting they played a more dominant role as apex predators in ancient marine ecosystems.
- The prey, identified as Xinpusaurus xingyiensis, was likely torn apart before consumption, with the predator using small, peg-like teeth to grip and break the spine, similar to hunting strategies seen in modern apex predators like orcas and crocodiles.
- The fossil shows minimal digestion of the prey, indicating the ichthyosaur died shortly after feeding, and the limb-to-tail preservation pattern suggests active predation rather than scavenging.
- This finding, published in iScience, represents the oldest clear evidence of megafaunal predation among marine tetrapods and implies that megapredation was more common in the Triassic than previously thought.
