What local folklore in Odisha's Mayurbhanj district once described as 'Asura hadda', or 'demon bones', has now been identified by scientists as the fossilized remains of ancient marine creatures, including sharks, dating back nearly 15 million years. This significant discovery provides compelling evidence that large parts of eastern India, particularly the area around present-day Baripada, were once submerged under a shallow sea during the Miocene epoch.
The findings, made in the Baripada Fossil Beds along the Budhabalanga river, include well-preserved shark teeth and vertebrae. Researchers highlight that this area, currently about 60 kilometers from the Bay of Bengal coastline, was historically much further inland, suggesting a vastly different prehistoric geography for the region.
A Discovery Rooted in Local Lore
The journey to this paleontological breakthrough began during an educational field visit led by Dr. Debabrata Nandi, Assistant Professor at North Orissa University's PG Department of Remote Sensing and GIS. Accompanying students near Baripada, Dr. Nandi observed unusual remnants in the landscape that appeared to be fossils. Discussions with local residents revealed the objects' local name, 'asura hadda', linking the scientific inquiry to long-standing community narratives.
Subsequent examination confirmed the remains belonged to ancient marine species, with sharks being prominent inhabitants of the region approximately 15 million years ago. This material provides clear evidence of a thriving marine environment where dry land now stands.
Geological Shifts and Ancient Seas
The significance of these fossils lies in their indication that seawater once extended considerably farther inland, covering areas now terrestrial within Mayurbhanj district. Scientists attribute these dramatic geographical changes over millions of years to a combination of shifting sea levels, gradual sediment accumulation, and tectonic movements. These forces are believed to have progressively pushed the coastline eastward, burying marine remains under layers of earth.
Unlocking Prehistoric Ecosystems
Experts believe this fossil assemblage offers invaluable insights into prehistoric ocean ecosystems and the rich biodiversity that flourished in eastern India during the Miocene period. The shark fossils, in particular, are expected to provide crucial clues about the evolutionary patterns of ancient shark species and help reconstruct the environmental conditions prevalent at that time.
Calls for Conservation and Further Research
The Baripada fossil zone, encompassing several villages in Mayurbhanj, is increasingly recognized as a vital geo-heritage site with substantial research potential for India's ancient marine history. Dr. Nandi and his team are actively collaborating with paleontologists from various research institutions to identify additional fossils and reconstruct the full scope of the ancient ecosystem.
Alongside ongoing scientific study, there are growing appeals for formal protection of this fossil-rich area. Proposals advocate for its development into a dedicated fossil park or geo-heritage destination, serving purposes of conservation, education, and tourism. What villagers once perceived as mysterious 'demon bones' has thus transformed into a pivotal piece of Odisha's prehistoric record, illuminating an ancient sea, long-extinct sharks, and a landscape dramatically different from today's Mayurbhanj.