The fossil's estimated 70 percent intact condition makes it a rare discovery.
Geological Agency Head Muhammad Wafid in Bandung on Friday said the fossil, uncovered in Tritik Hamlet, Rejoso sub-district, is rarely found as a single individual preserved in near-complete condition within one excavation site.
He explained that the 2025 excavation successfully exposed a site containing a significantly complete fossil. Initial identification shows the ancient elephant's skeleton measures four meters in length and three meters in height.
The discovery process began with correspondence from the Nganjuk District Government in 2023, followed by a field survey in 2024 conducted by the Geological Museum team.
Physical analysis indicates the fossil is approximately 800,000 years old, while its fully worn molars suggest the animal was an adult at the time of death.
Wafid emphasized that the geological characteristics of the Kendeng Hills zone provide strong potential for further significant findings.
The area's lithology, dominated by marl and clay, offers a natural environment favorable for fossil preservation. Although only one large fossil has been found, he believes the probability of additional discoveries remains high.
He noted that the site may represent an ancient habitat containing more traces of past life.
The Nganjuk discovery adds to the growing list of ancient fauna findings on Java Island, complementing previous discoveries in Blora and along the Bengawan Solo River.
These findings enhance scientific understanding of ecology and fauna migration in the Sunda Plain during the Pleistocene era.
For follow-up action, the fossil will be handled by the Geological Museum in Bandung for conservation and reconstruction.
Wafid said the process is expected to take eight to nine months. Once completed, the fossil is planned to be displayed for public education.
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Translator: Ricky Prayoga, Primayanti
Editor: Azis Kurmala
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