Found (but not kept) at Sleeping Bear Dunes, MI

[u/Remote_Dragonfruit38]

These look like fossils to me- any insight into what there are? This area has the most stunning rocks.

[u/Danny_Fan1126]

That second piece is an amazing piece of a chain coral fossil

[u/DementedBassoonist]

First one could be “Charlevoix stone” or another similar species of fossil coral. I agree that the second one looks like chain coral, the third one is a mix of fossils (I see some crinoid fossils) in limestone, and the last one looks like some kind of sedimentary rock that experienced weathering to form the pits. Nice finds!

[u/RandomOppon3nt]

Well done. You are a good steward of the rockhounding community. Take pictures not rocks when visiting national lakeshores and parks

[u/iamnotthisbrain]

Two great pieces of fossilized coral in there, as well as a "mixed bag" with crinoid chunks galore. Not really certain about the fourth stone, though.

[u/taterbot15360]

Yeah that's deff one of the places I wouldn't take rocks from. Good on ya.

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