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Surprising Discovery Amazes Scientists And Expands Understanding Of Ancient Hominid Diversity In Asia
A mysterious jawbone discovered in the deep sea off the coast of Taiwan has just revealed a secret kept for thousands of years. Researchers have identified the fossil as belonging to a Denisovan, an extinct relative of humans and Neanderthals.
The revelation confirms that this archaic group was spread across different regions of Asia, including places where there had previously been no records of this type.
The discovery occurred in the early 2000s when a fisherman found the jawbone at the bottom of the Penghu Channel, about 25 kilometers off the western coast of Taiwan.
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The fossil, nicknamed Penghu 1, has left scientists intrigued for over a decade. They were uncertain if it belonged to a Homo erectus, an archaic Homo sapiens, or a Denisovan.
Modern Technique Brought Precise Answers
Now, a new study has provided answers. The research was published on April 10 in the journal Science. Scientists used an advanced technique to identify the fossil: paleoproteomics, which analyzes ancient proteins preserved in bones.
This approach revealed that the mysterious jawbone, with large teeth, belonged to an individual of the Denisovan group. Furthermore, it was possible to conclude that the fossil was from a male.
The study included the participation of Frido Welker, a molecular anthropologist at the University of Copenhagen, and an international team.
According to Welker, this same technique could be applied to other hominid fossils to identify whether they are Denisovans, Neanderthals, or belong to other ancient human populations.
Denisovans: Rare But Spread Across Asia
The importance of the find lies in the fact that Denisovan fossils are extremely rare. Unlike Neanderthals, which left many remains scattered across Europe and Western Asia, Denisovans are primarily known through DNA found in a few bones. Most fossils from this group had previously come from the Denisova Cave in Siberia.
Thus, the jawbone of Penghu 1 is a key piece for understanding where these hominids lived. It shows that Denisovans were not restricted to cold regions. They also inhabited warm, humid areas like Taiwan.
Mysterious Jawbone: Uncertain Dating But Valuable Clues
Despite the advancement, an important limitation of the study is the difficulty in accurately dating the fossil. The bone was soaked for a long time, which prevented the use of traditional methods, such as carbon-14 or uranium dating. Attempts to extract DNA also failed.
Nevertheless, scientists found animal bones associated with the jawbone. These bones indicate two possible age ranges for the fossil: between 10,000 and 70,000 years ago or between 130,000 and 190,000 years.
If the jawbone belongs to the more recent period, it could be the youngest Denisovan fossil ever found. The youngest until now was from the Tibetan Plateau and was about 40,000 years old.
Next Steps In The Search For Ancestors
An anthropologist, Sheela Athreya from Texas A&M University, who did not participate in the study, commented on the results. According to her, this find confirms what was already suspected: hominids were present in various parts of Eastern Eurasia during the Pleistocene.
The researchers also observed a striking difference between the human groups that lived at that time. While Neanderthals had tall, graceful jawbones with small teeth, Denisovans had lower, robust jaws with large teeth.
This diversity helps to better understand how the genus Homo evolved. The identification of Penghu 1 as a Denisovan expands knowledge about the distribution and characteristics of these ancient groups.
Now, scientists want to apply paleoproteomics to other similar fossils. The goal is to identify new traces of Denisovans and other hominids in regions of Asia that have not yet been fully explored.
According to Athreya, the advancement of this technique opens new possibilities. “We can do much more with fossils that were previously unverified found in channels and riverbeds in Asia,” she stated.
The mysterious jawbone of Penghu 1, after decades of uncertainty, becomes a key piece in the search for answers about human past.
With information from Science Alert.
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