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<p>A newly reanalyzed fossil skull from China — dubbed <strong>Yunxian 2</strong> — has presented a striking challenge to the established timeline of human evolution. According to a study published on <strong>25 September 2025</strong> in <em>Science</em>, the skull is estimated to be between <strong>940,000 and 1.1 million years old</strong>, and may belong to an early branch of a lineage related to Denisovans or <em>Homo longi</em>. If accepted, the finding suggests that the divergence among human lineages occurred much earlier than previously believed. <a href="https://www.reuters.com/science/ancient-skull-china-may-shake-up-timeline-human-evolution-2025-09-25/?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">France 24+3Reuters+3english.cas.cn+3</a></p>

<h3 class="wp-block-heading">The Yunxian 2 Skull: Discovery, Reconstruction, and Dating</h3>

<p>The fossil was originally unearthed in <strong>1990</strong> in Hubei Province, central China, but due to its poor preservation and distortion by geological pressures, its significance remained obscured for decades. <a href="https://abcnews.go.com/International/million-year-skull-rewrite-timeline-human-origin-researchers/story?id=125964277&;utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">The Jakarta Post+4ABC News+4english.cas.cn+4</a></p>

<p>Researchers have now applied advanced <strong>digital reconstruction techniques</strong>, including high-resolution CT scans and 3D modeling, to correct distortions and restore features of the skull. This process revealed morphological traits inconsistent with <em>Homo erectus</em>, the species to which it had been tentatively assigned earlier. <a href="https://english.cas.cn/newsroom/research_news/life/202509/t20250924_1055290.shtml?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">ABC News+3english.cas.cn+3People&#8217;s Daily+3</a></p>

<p>Through comparative analysis with over a hundred other hominin fossils, the team placed Yunxian 2 within a lineage that may include <em>Homo longi</em> (sometimes nicknamed “Dragon Man”) and share affinities with Denisovans. <a href="https://english.cas.cn/newsroom/research_news/life/202509/t20250924_1055290.shtml?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">english.cas.cn+2People&#8217;s Daily+2</a></p>

<p>The estimated age range &#8212; between roughly <strong>940,000 to 1.1 million years</strong> — indicates that significant evolutionary divergences among hominins occurred far earlier than most prior models suggested. <a href="https://www.reuters.com/science/ancient-skull-china-may-shake-up-timeline-human-evolution-2025-09-25/?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">France 24+3Reuters+3english.cas.cn+3</a></p>

<h3 class="wp-block-heading">What the Skull Reveals: Morphology and Implications</h3>

<p>The reconstructed skull displays distinctive features: a long, low vault; prominent brow ridge; large braincase (larger than expected for its age); flat cheekbones; and a projecting nasal bridge. <a href="https://www.reuters.com/science/ancient-skull-china-may-shake-up-timeline-human-evolution-2025-09-25/?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">France 24+3Reuters+3english.cas.cn+3</a></p>

<p>Although the face is robust, it lacks the mid-facial prominence characteristic of Neanderthals. These features point toward a separate evolutionary branch rather than <em>Homo erectus</em> or Neanderthal ancestry. <a href="https://www.reuters.com/science/ancient-skull-china-may-shake-up-timeline-human-evolution-2025-09-25/?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">Reuters+2France 24+2</a></p>

<p>Importantly, the study proposes that early human branches—leading to modern humans, Neanderthals, <em>Homo longi</em>, and others—began diverging more than a million years ago. This reconceptualizes the so-called <strong>“Muddle in the Middle”</strong>, the poorly resolved period between 300,000 and 1 million years ago in human evolutionary history. <a href="https://www.reuters.com/science/ancient-skull-china-may-shake-up-timeline-human-evolution-2025-09-25/?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">Ancient Origins+4Reuters+4France 24+4</a></p>

<p>If Yunxian 2 represents a close relative or precursor to <em>Homo longi</em> and Denisovans, it may also challenge the traditional <strong>“Out of Africa”-centric model</strong>, suggesting that Asia could have played a more critical role in hominin diversification. <a href="https://www.thejakartapost.com/culture/2025/09/26/ancient-skull-from-china-may-shake-up-timeline-of-human-evolution.html?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">The Jakarta Post+2France 24+2</a></p>

<h3 class="wp-block-heading">Wider Implications and Scientific Response</h3>

<h4 class="wp-block-heading">Reevaluating Evolutionary Timelines</h4>

<p>One of the most striking potential shifts is in the <strong>timing of divergence</strong>. Under this new framework, the split between the ancestors of modern humans and those of Denisovans/longi lineages could date back <strong>over a million years</strong>, which is substantially earlier than many earlier estimates that placed such splits at 700,000 to 500,000 years ago. <a href="https://www.theguardian.com/science/2025/sep/25/study-of-1m-year-old-skull-points-to-earlier-origins-of-modern-humans?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">The Jakarta Post+3The Guardian+3Reuters+3</a></p>

<h4 class="wp-block-heading">Geographic Perspective</h4>

<p>While Africa remains central to much human evolution research, discoveries like Yunxian 2 highlight Asia&#8217;s significance in hominin diversity. Complex interactions, migrations, and isolated lineages may have contributed to a more dispersed evolutionary history than previously thought. <a href="https://www.thejakartapost.com/culture/2025/09/26/ancient-skull-from-china-may-shake-up-timeline-of-human-evolution.html?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">english.cas.cn+3The Jakarta Post+3France 24+3</a></p>

<h4 class="wp-block-heading">Challenges and Controversies</h4>

<p>Not all experts accept the conclusions outright. Some emphasize that new fossil evidence, better sampling, and more genetic data are essential to confirm or refute the proposed reclassification. <a href="https://www.thejakartapost.com/culture/2025/09/26/ancient-skull-from-china-may-shake-up-timeline-of-human-evolution.html?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">The Jakarta Post+2People&#8217;s Daily+2</a></p>

<p>Moreover, the fossil record remains fragmentary and biased toward better-preserved specimens. The field must guard against overinterpretation based on limited data. <a href="https://www.techexplorist.com/new-skull-discovery-china-shaking-human-origins-research/101114/?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">Tech Explorist+1</a></p>

<h4 class="wp-block-heading">Integration with Genetic Studies</h4>

<p>While fossil morphology offers powerful clues, reconciling these findings with DNA and proteomic analyses is key. Because DNA degrades over time, older fossils rarely yield genetic material. The study’s morphological inferences must be tested against molecular lines of evidence where possible.</p>

<h3 class="wp-block-heading">Related Discoveries &; Context</h3>

<ul class="wp-block-list">
<li><strong>Harbin cranium (“Dragon Man”)</strong>: A skull discovered in northeastern China and attributed to <em>Homo longi</em>. Studies in 2025 linked it to Denisovan affinities, reinforcing the possibility of an Asia-centered lineage. <a href="https://en.wikipedia.org/wiki/Harbin_cranium?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">Wikipedia</a></li>

<li><strong>Dali Man</strong>: A mid-Pleistocene skull found in China, often discussed in context of transitional forms between archaic humans and modern humans. <a href="https://en.wikipedia.org/wiki/Dali_Man?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">Wikipedia</a></li>

<li><strong>Jinniushan human</strong>: A robust hominin found in northeastern China (~260,000 years old) that exhibits a mix of archaic and more modern traits. <a href="https://en.wikipedia.org/wiki/Jinniushan_human?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">Wikipedia</a></li>
</ul>

<p>The discovery and reanalysis of <strong>Yunxian 2</strong> may demand a fundamental rethink of how and when key branches in the human family tree diverged. If verified and widely accepted, the finding could push back timelines by hundreds of thousands of years, highlighting the rich, regionally diverse, and complex tapestry of human evolution. This does not negate earlier models but invites their refinement—or in some cases, revision.</p>

<p><strong>Acknowledgment</strong>: This article draws upon the Reuters report &#8220;Ancient skull from China may shake up timeline of human evolution&#8221; and additional coverage from outlets such as <em>People</em>, <em>CBS News</em>, <em>France24</em>, <em>People’s Daily</em> / Xinhua, <em>The Guardian</em>, <em>ABC News</em>, and others. All facts have been paraphrased and restructured to produce original content while maintaining fidelity to the underlying scientific reporting.</p>

<p>Related coverage</p>

<p> </p>

<figure class="wp-block-image"><a class="flex flex-col items-center gap-4 overflow-hidden pb-6" href="https://www.reuters.com/science/ancient-skull-china-may-shake-up-timeline-human-evolution-2025-09-25/?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener"><img src="https://www.reuters.com/resizer/v2/GJXUU2P2DNKP3D4FIOVAVRK3EA.jpg?auth=679b6e6b4e191eddd265027002ec5b6b2374cd824db98b374d0b12264f2e3b4a&;smart=true&;width=2048&;height=1664" alt="Ancient skull from China may shake up timeline of human evolution" /></a></figure>

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<figure class="wp-block-image"><a class="flex flex-col items-center gap-4 overflow-hidden pb-6" href="https://www.theguardian.com/science/2025/sep/25/study-of-1m-year-old-skull-points-to-earlier-origins-of-modern-humans?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener"><img src="https://www.google.com/s2/favicons?domain=https://www.theguardian.com&;sz=32" alt="" /></a></figure>

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<p><a href="https://timesofindia.indiatimes.com/science/million-year-old-skull-suggests-humans-emerged-earlier-than-thought-challenging-the-africa-centric-theory-of-evolution/articleshow/124149376.cms?utm_source=chatgpt.com" target="_blank" rel="noreferrer noopener">Million-year-old skull suggests humans emerged earlier than thought, challenging the Africa-centric theory of evolution</a></p>

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