If you think you have found an egg fossil, chances are that it isn't actually an egg fossil. 98% of most found "eggs" posted here are not actual egg fossils. It could be a concretion or nodule.  However, if you really want to learn about fossil eggs, here are a few links to get you started.      Our resident Egg Studying Paleontologist, CBChiefski, has been kind enough to produce some in depth guides on egg identification.    Think you found an egg? Read thi