In a first, scientists discover 2.5 million-year-old dragonfly fossil in India – kolkata

A staff of scientists from West Bengal has found the primary dragonfly fossil in India from Jharkhand’s Latehar district. The fossil is a minimum of 2.5 million years outdated. A paper on the discovering was printed in the October 10 version of Current Science journal.

“This is the first dragonfly fossil from India. It is a well-preserved one. The fossil belongs to the late Neogene period, which dates between 2.5 million and five million years ago,” stated Subir Bera, a professor with the Centre for Advanced Study of the Botany division, University of Calcutta.

The dragonfly is round 3cm lengthy and has a wingspan of round 2.5cm. This is, nonetheless, a lot smaller than the fossils of big dragonflies, which have been discovered elsewhere in the world. Experts stated that the wingspan of one of many big dragonflies Meganeuropsis permiana measured round 2.5 toes. It dates again to the Permian period, round 300 million years in the past. In 2013, a big, effectively-preserved dragonfly fossil, courting again 200 million years, was found in China.

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Researchers from 4 universities in West Bengal have been in search of fossils in the sediments of Chotanagpur plateau for nearly a yr. In January 2020, they dug the dragonfly fossil from a depth of round 5m beneath the soil floor.The staff has additionally discovered fossils of varied bugs, fishes and leaves of some flowering crops.

The analysis was headed by Mahasin Ali Khan, assistant professor of Botany at Sidho-Kanho-Birsha University.

“The nearest living member of the fossil is Libellula depressa, a species of dragonfly that is found in any tropical country, including India,” stated Manoshi Hazra, one of many staff members and the primary creator of the analysis paper, which has been printed in Current Science.

As dragonflies spend most of their lives close to recent water our bodies, the scientists stated that tens of millions of years in the past a freshwater physique might need existed there, which has now dried up. The different fossils of crops and fishes, which the scientists have discovered, additionally assist the speculation.

“The very fact that the team has found the fossil of an adult dragonfly from the sedimentary bed is very interesting. Usually the prospect of finding an immature dragonfly from the sedimentary bed is huge because dragonfly-larvae live underwater. The prospect of finding insect fossils from sedimentary beds and coal beds is huge, but unfortunately little work has been done in India in this regard,” stated TK Pal, a former scientist of the Zoological Survey of India.

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