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AI Method Helps Identify Which Dinosaurs Made Fossil Footprints

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Scientists have developed a new artificial intelligence method that helps determine which dinosaurs made specific fossilized footprints, addressing a long-standing challenge in paleontology. Footprints are among the most common dinosaur fossils, yet matching them to the correct species has often relied on subjective interpretation. The new approach uses AI to analyze eight measurable traits in each footprint, offering a more objective classification system.

The research, published in Proceedings of the National Academy of Sciences, analyzed nearly 2,000 footprint silhouettes spanning 150 million years. The algorithm identified key features such as toe spread, heel position, load distribution, and left-right asymmetry, which together explain differences in footprint shape. Experts then mapped these traits to known dinosaur groups to guide identification of future discoveries.

Researchers say the method does not eliminate uncertainty, as footprint shape can vary depending on behavior, ground conditions, burial processes, and erosion. Still, it provides a consistent framework to compare tracks across time and locations. One notable result supported earlier findings that certain 210-million-year-old footprints from South Africa resemble bird tracks, despite predating the earliest known bird fossils by tens of millions of years.

The findings suggest AI can become a powerful tool in paleontology, helping scientists reconstruct ancient ecosystems and better understand dinosaur diversity, even when bones are absent and only footprints remain.

Fossil Discoveries Reveal Dinosaurs Thrived Right Up to Their Extinction

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Recent fossil evidence suggests that dinosaurs were thriving right up until the catastrophic asteroid impact 66 million years ago, challenging previous assumptions that their populations were already in decline. A rich and diverse dinosaur community has been uncovered in New Mexico, indicating that these prehistoric creatures maintained robust ecosystems shortly before their sudden extinction. These findings paint a picture of dinosaurs as active and flourishing in their final days, rather than gradually fading from the planet. Devamını Oku

Fossil Discovery Reveals Plant Survival After the End-Permian Mass Extinction in China

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New Fossil Findings Suggest Plants Survived the End-Permian Mass Extinction in China

Fossil evidence uncovered in China indicates that not all life perished during the catastrophic End-Permian mass extinction, which occurred nearly 252 million years ago. This event, often referred to as the “Great Dying,” led to the extinction of approximately 80% of life on Earth. While the mass extinction was largely driven by intense volcanic eruptions in the Siberian Traps, causing massive carbon dioxide emissions, global warming, and ocean acidification, new findings show that some plant species managed to survive the upheaval. Fossilized remains of gymnosperm forests and ferns have been discovered in present-day northeastern China, suggesting that certain regions of terrestrial life endured the planet’s harshest extinction event.

Insights from Ancient Rock Layers in Xinjiang

The research, published in Science Advances, focused on rock layers in Xinjiang, China, that date back to the time of the End-Permian extinction. Lead researcher Wan Yang, a professor of geology and geophysics at Missouri University of Science and Technology, pointed out that these rock formations showed no signs of mass plant extinction in the region. Rather than a rapid die-off followed by regrowth, the fossils of spores and pollen found in the layers revealed a more gradual shift in plant species. This discovery challenges the long-held belief that land-based ecosystems experienced the same near-total collapse as marine environments during this period.

The Role of Climate and Geography in Plant Survival

The findings also suggest that geography and climate played a significant role in plant survival during this difficult period. The study proposes that areas with humid climates and proximity to water bodies, such as rivers and lakes, acted as refuges for vegetation. This pattern mirrors what has been observed in other parts of the world, such as South America and Africa, where higher-latitude locations seemed to offer more stable conditions for plant life. Paleobotanist Josefina Bodnar, from the National University of La Plata in Argentina, commented that plants’ survival mechanisms, including deep-rooted structures and durable seeds, likely helped them endure the extreme environmental conditions of the time.

Implications for Understanding Mass Extinctions

These new fossil discoveries offer valuable insights into how life on land responded to one of Earth’s most severe extinction events. They challenge previous assumptions about the total collapse of terrestrial ecosystems during the End-Permian event, revealing a more complex survival strategy among plants. As scientists continue to study the resilience of life during such catastrophic periods, these findings help improve our understanding of mass extinctions and the environmental factors that shape the survival of species. The research underscores the importance of regional differences and survival adaptations in shaping the course of life on Earth through times of global environmental upheaval.