One of the rarest of dinosaur eggshell fossils, Hypselosaurus priscus is found in France and some other European countries. This dinosaur grew to an impressive 27ft in length. It is one of the heaviest Titanosaurs that laid some of the thinnest eggshells! It has been found that younger individuals gave rise to thinner eggshells, older adults having slightly thicker eggshell quality. This could in fact be due to regional calcium mineral levels, drought, environment issues and social aspects may in fact be the cause of why these eggshells are so thin. For an egg that is estimated to be around 1ft across, its a living wonder! 70 Million years old, Provence, France. I only am able to get very small quantities of this material.
Size: Average size 8mm-12mm