connorp Posted January 12, 2022 Share Posted January 12, 2022 I found this specimen in Middle Pennsylvanian black shale in Illinois. It measures maybe 8mm in the widest dimension. Honestly not even sure if it's a fossil, never seen anything like it. Any ideas? Part Counterpart Link to comment Share on other sites More sharing options...
Lone Hunter Posted January 12, 2022 Share Posted January 12, 2022 (edited) Could it maybe be Dendrites? Edited January 12, 2022 by Lone Hunter Link to comment Share on other sites More sharing options...
Rockwood Posted January 12, 2022 Share Posted January 12, 2022 Annularia ? Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 12, 2022 Share Posted January 12, 2022 This looks like a bit of fish to me. Scale? Skull plate? Maybe dermal denticle? @jdp @RCFossils 1 2 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
deutscheben Posted January 13, 2022 Share Posted January 13, 2022 The symmetry and shape makes me think fish bone of some sort, but I’m not knowledgeable enough to say what kind. Link to comment Share on other sites More sharing options...
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