skiman1016 Posted August 23, 2018 Share Posted August 23, 2018 (edited) I found this rock just outside of Riverton, Wyoming in an area with a lot of chalcedony. I believe the surrounding material is from the Wind River formation. I am unsure if this is some sort of fossil or an interesting rock. Any information would be helpful.This was from the same location as the rock in my previous posting: I believe the surrounding material is from the Wind River formation. I am unsure if this is some sort of fossil or an interesting rock. Any information would be helpful. Edited August 23, 2018 by skiman1016 Link to comment Share on other sites More sharing options...
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