Unknown fossil egg in surrounding rock

Description

This is a large fossil with an egg inside the stone.  I'm not an expert, so I can't say what type of egg is there, but hopefully you are and can tell from the measurements included in the photos.  Please note the egg part has a hole in it and something is inside but I can't tell what. You're buying this fossil "as is" with the understanding that you are getting exactly what is pictured and that it is not returnable.