ZinaBeth Posted February 3, 2019 Share Posted February 3, 2019 Cheboygan Michigan they look like brains, I find them from baseball to basketball sizes. I broke one up with a sledge hammer, the center gets more dense. The out side seems to house shells? Link to comment Share on other sites More sharing options...
ZinaBeth Posted February 3, 2019 Author Share Posted February 3, 2019 Link to comment Share on other sites More sharing options...
ynot Posted February 3, 2019 Share Posted February 3, 2019 Need a scale on this piece. Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
KimTexan Posted February 3, 2019 Share Posted February 3, 2019 Looks like one of those very weathered shell conglomerates one sees at times. Link to comment Share on other sites More sharing options...
abyssunder Posted February 3, 2019 Share Posted February 3, 2019 Hard to say for sure, but maybe there are cemented gastropod and brachiopod/bivalve remains. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
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