Scientists are uncovering evidence that ancient marine reptiles in what is now central Colombia were more formidable predators than modern killer whales, occupying unexpectedly high levels in the food chain. Research conducted by McGill University, led by doctoral student Darlie Cortes, indicates that these giant reptiles could exceed 10 meters in length and dominated the seventh trophic level, compared to modern apex predators like killer whales and great white sharks that peak at the sixth level.
The study analyzed fossil evidence from the Paja Formation, revealing a complex food web where large predators thrived in a warm Cretaceous climate, leading to enhanced marine diversity. The research highlights how evolutionary competition shaped these ecosystems and illustrates significant adaptations in ancient marine life that preceded human impact. As scientists continue to study various fossil sites, they aim to uncover more insights into the evolutionary history of marine predators and their ecological roles. This research underscores the importance of understanding ancient ecosystems to inform contemporary biodiversity and conservation efforts.
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