Scientists studying a fossilized wing bone of a pterosaur from Brazil’s renowned Romualdo Formation have uncovered molecular clues that reveal details about the ancient reptile’s diet and internal bone structure, shedding light on how it lived over 100 million years ago.
- 100-million-year-old pterosaur fossil discovered in Brazil
- Mineral layers preserved bone structure and microscopic details
- Chemical evidence reveals diet mainly of fish and squid
What happened
Researchers have studied a hollow wing bone, or phalanx, from a pterosaur unearthed in the Araripe Basin’s Romualdo Formation in northeastern Brazil. This region is famous for its well-preserved fossils that often remain sealed inside mineral concretions, acting as natural time capsules for ancient life.
Using high-resolution CT scans and mineral analysis, scientists explored the fossil without damaging it. They discovered multiple mineral layers inside the bone cavity, including phosphate and calcite minerals formed through interactions driven by microbial decay on the seafloor. This mineralization preserved fine internal features that typically degrade over millions of years.
Why it feels good
This discovery provides a fascinating window into the biology of an extraordinary flying reptile that soared ancient oceans. The preservation of microscopic canals and collagen-like fibers highlights the bone’s delicate internal architecture, which resembles that of modern birds despite the vast passage of time.
Even more remarkably, researchers detected steroid biomarkers called steranes within the fossil, the first time such molecular signs have been reported in pterosaur remains. These molecules carry information about the animal’s diet, revealing it likely fed on fish and squid-like marine animals, aligning perfectly with its tooth and skull shape.
What to enjoy or watch next
This study opens new doors for paleontologists eager to learn more about the lifestyles and diets of prehistoric creatures through chemical signatures preserved in their fossils. As techniques continue improving, we can expect further incredible insights from similarly rare finds.
For anyone interested in natural history, the Romualdo Formation remains a rich source of remarkable fossils that contribute valuable knowledge about prehistoric ecosystems. Keep an eye out for future research exploring other creatures from this spectacular fossil site and how microbes and minerals collaborate to preserve delicate ancient details.