Recent research has raised concerns about the authenticity of a mysterious “shark-toothed” aquatic predator fossil, potentially linked to the mosasaur family, which lived alongside dinosaurs. Scientists have suggested that this jaw fragment may be a fraudulent artifact.
The controversial fossil, which dates back 66 to 72 million years, was discovered by miners at the Sidi Chennane phosphate mines in Morocco. Originally classified as a new species, Xenodens calminechari, by a team of researchers, doubts have emerged regarding its legitimacy.
Researchers have noted that the fossil showcases unusually blade-like teeth akin to those of sharks, a feature proposed to assist in subduing sizeable prey. However, concerns have been raised about the integrity of such fossils in Morocco, known for its wealth of mosasaur remains. Many fossils in the region are frequently modified to enhance their value for sale, leading to skepticism regarding their authenticity.
Evidence presented by researchers indicates that the tooth arrangement in the fossil does not correspond correctly to the jaw structure. This anomaly raises significant doubts as each tooth should align with specific pits in the jaw. The current specimen has four teeth over only two pits, indicating possible manipulation. Additionally, signs of artificial gluing have been identified, suggesting the teeth might have been improperly affixed.
To ascertain whether fossils have been altered, advanced techniques like CT scanning can be utilized. This non-invasive method allows scientists to inspect the internal structure of fossils and determine if they have undergone modifications. Experts argue this practice should be standard for assessing mosasaur fossils sourced from Morocco.
Instead of being classified as a new species, researchers believe this specimen may represent a previously known, albeit altered, mosasaur. Comparisons have been drawn with juvenile mosasaurs known as Carinodens and Globidens.
Experts believe that the market dynamics largely drive fossil forgeries. Fossils that appear complete and well-preserved generally command higher prices, encouraging manipulation for profit. In contrast, countries like Canada have implemented stricter regulations regarding fossil sales, thereby mitigating such practices.
As discussions continue around the validity of this extraordinary find, researchers emphasize the importance of transparency in fossil preparation and ongoing dialogue about the challenges of authenticity within the paleontological community. The scientific discourse surrounding these issues reflects the critical need for rigorous examination and data collection to establish consensus on fossil authenticity.
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