New Study Challenges Dinosaur Decline Theory Before Asteroid Impact
New Study Challenges Dinosaur Decline Theory Before Asteroid Impact
US · Published Jul 5, 2026
A 2025 study published in the journal Science has provided new insights into the state of dinosaur ecosystems before the asteroid impact 66 million years ago.
Based on fossils discovered in the Naashoibito Member of the San Juan Basin in New Mexico, researchers found evidence that dinosaurs were thriving in diverse ecosystems up until the moment of extinction.

Impact & Risks

The study reshapes our understanding of dinosaur extinction, suggesting it was caused by a sudden catastrophic event rather than a gradual decline. This has implications for how scientists interpret extinction events and the resilience of ecosystems. However, the findings are based on a single region, and critics argue that more global evidence is needed to confirm the conclusions. If validated, this research could alter the narrative of one of Earth's most significant extinction events, emphasizing the role of external factors like asteroid impacts over internal ecological decline.

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