hi everyone, opions greatly appreatiated. i have had this since i found it as a kid, so unfortunatly cannot remember location(england though). it is egg shaped but not complete, about the same size as a chicken egg, it is made of very dense rock, inside where you would expect to find the yolk of a chicken egg is a ball of different colour stone that is more organic looking and pitted in texture. there is also two puncture holes in the underside of the fossil. i would love to find out what this is so any comments welcome please. regards, barry.