Posted 5/1/2016 14:52 (#5275971 - in reply to #5275944) Subject: RE: Is this a fossil?
Illinois
I don't know what kind of rock this is. About 20 years ago a neighbor found a large portion of a mastadon tusk. He had it verified because he didn't know what it was. I found this only a few hundred feet from where he found it. I wouldn't be suprised if this was a lake bed of some kind. This area has a ton of rocks which is uncommon for central Illinois.
Is this a fossil?
