Mineral Specimen Unveiled as World's First Dinosaur Egg After 140 Years

A mineral specimen collected in India over 140 years ago and registered in a mineralogy collection at the Natural History Museum in London has been found to be a dinosaur egg. The egg is believed to be from a titanosaur, the largest dinosaur to ever exist, and is about 60 million years old. The egg was likely covered in debris and lava from a nearby volcano after it was laid, and the water inside the egg percolated through the rock and shell to create the agate. The egg was collected at least 80 years before dinosaur eggs were scientifically recognized.