Geologists in Tamil Nadu discover Dinosaur eggs. (TOI Photo)
Radha Venkatesan, TNN Oct 1, 2009, 12.48am IST
COIMBATORE: Geologists in Tamil Nadu have stumbled upon a Jurassic treasure trove buried in the sands of a river bed. Sheer luck led them to hundreds of fossilized dinosaur eggs, perhaps 65 million years old, underneath a stream in a tiny village in Ariyalur district. ( Watch Video )
Researchers from the Salem-based Periyar University found clusters of eggs of what they believe to be the most aggressive Carnosaur and the docile, leaf-eating Sauropod at Sendurai village.
While Carnosaurs were large predatory dinasaurs, Sauropods were long-necked, herbivores which grew to enormous heights and sizes.
That dinosaurs once roamed the area was known from the fossils found there on earlier expeditions. But this is the first time that hundreds of nests embedded with hundreds of clusters of dinosaur eggs have been unearthed in the district.
Located on the highway between Chennai and Tiruchi, the Ariyalur and the neighbouring Perambalur geological sites nestle in the northern plains of the Cauvery river. The place is a veritable museum of ancient organisms, dating back to 140 million years. Ever since a British couple -- the Wines -- collected 32 boxes of "strange stone objects" in 1843, the Ariyalur region has drawn geologists from across the world for its rich fossil presence and diversity.
Scientists have found the tiniest marine algae or the nano fossils besides the rare shell-like bivalve, gastropoda, telecypoda and brachiopoda in the geological sites spread across 950sqkm in Ariyalur and Perambalur districts.
"We found clusters and clusters of spherical eggs of dinosaurs. And each cluster contained eight eggs," says Dr M U Ramkumar, geology lecturer of the Periyar University. Each egg was about 13 to 20 cm in diameter and they were lying in sandy nests which were of the size of 1.25 metres.
In the 1860s, a British geologist first recorded the presence of bone remains of dinosaurs in Ariyalur. Over a century and a half later, the egg of a dinosaur was found in a cement factory of the state-owned Tamil Nadu Cements Ltd in 1990s. But officials realized that it was a dinosaur egg only 10 years later.
