In October 2009, paleontologists in India found hundreds of dinosaur eggs. Inside each egg were the dinosaur embryos (developing babies). But the eggs were later stolen. Scientists assume that the valuable eggs were sold to collectors for a high price. In the limestone cliffs in England, the footprint of an iguanodon was carved out of the rock. The footprint of the iguanodon-a relative of the iguana lizard-was at least 135 million years old. Since limestone is very soft, thieves can easily dig out fossils. In nearby Wales, more than 30 imprint from a three-toed dinosaur were stolen. They were later found to be on sale on eBay, a popular buy and sell website.