SilurianSalamander Posted January 22, 2023 Share Posted January 22, 2023 The preservation isn’t the best. Broke open a big piece of dolomite with a nice brachiopod. Found that I had shattered whatever this is and exposed some nice silicified chain coral. It’s sorta a hemisphere with internal structures. My best guess would be some sort of echinoid. Silurian Wisconsin, Hartung quarry Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 22, 2023 Share Posted January 22, 2023 More likely a brachiopod interior filled with crystals, especially as you had found a brachiopod in the rock. 2 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
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