Dinosaur eggs or ammonite sediments: What was found in Perambalur?

Pictures of ‘dinosaur eggs’ in Perambalur district of Tamil Nadu have been doing rounds on social media since Thursday. But a group of local geology and archaeology enthusiasts, who visited the area, identified them as ammonite sediments.

Several images of large spherical objects, which some people claimed were dinosaur eggs, were shared on social media on Thursday. At least 25 such egg-shaped balls were found on the bed of the Kunnam tank.

The locals alerted revenue officials, who inspected the spot. “There are at least 25 such balls, each weighing at least 200 kg. We were unable to relocate them immediately,” said A. Chinnadurai, Kunnam Tahsildar. The matter has been reported to the District Collector.

Geological experts, who reached the spot to analyse the findings, have debunked the viral claims, saying the Dinosaurus eggs-like fossilised rocks were most likely ammonite sediments. Experts have collected all the fossil rocks for further investigation.

Interestingly, in 2009 too, similar fossilised rocks were found in the same region which turned out to be ammonite sediments back then also.

The group of experts found ammonite sediments in a water body called the Kunnam tank. “The marine species should have been trapped in the process of concretion for centuries. It was misconceived as dinosaur egg,” Ramesh Karuppiah, one of the group members was quoted as saying, adding that the present day Ariyalur and Perambalur in Tamil Nadu were once a seabed.