I have a geode i found at a spot that there are an abundance of geodes at and when i grabbed this particular geode i quickly realized it is not only a geode but is undoubtedly a skull of some animal or something long before it was a geode. It is the most unique thing i have ever seen
Aprox measurements 5½" wide 3" thick 7" long
I found this in nature. I do not know what kind of skull it is but it is undeniably a skull covered in natural geode