"I would go to museums and say can I open your dinosaur egg? Can I just drop them on the floor and look inside? And they'd say no." ~ Jack Horner, Paleontologist

Many classic dinosaur books credit American George Olson with the first discovery of dinosaur eggs back in 1923 during an expedition in Mongolia. While Olson's find was the first recognized egg find, the real honor goes to 19th century French Catholic Priest Father Jean-Jacques Poech. In 1859, Father Poech came across the shell fragments of what he believed to be a giant bird. As it turns out, those eggs were really from Hypselosaurus.

Hypselosaurus was first described by P.E. Matheron in 1869 based on a selection of fossilized bone fragments. Matheron initially concluded the remains came from a huge crocodilian, but in 1890 Charles Depéret proposed Hypselosaurus was actually a sauropod dinosaur. The definition of Hypselosaurus has continued to shift over the years from a small to midsized sauropod perhaps 12m (40ft) in length to more current theories that may assign the remains to other, more firmly defined titanosaurs.