SilurianSalamander Posted January 12, 2023 Share Posted January 12, 2023 Found in the side of a building in Wisconsin, Cambrian-Devonian rocks here. Any ideas? Thinking bivalves or a bivalved arthropod. Sorry for the lack of scale! Each one is about the size of an apple seed Link to comment Share on other sites More sharing options...
Lousde Posted January 12, 2023 Share Posted January 12, 2023 Hi, i don't think so, but maybe someone more expert than me will shime in. Link to comment Share on other sites More sharing options...
ClearLake Posted January 13, 2023 Share Posted January 13, 2023 I think it’s possible that they could be large ostracods, but with that preservation it’s going to be hard to be too confident. That’s my 2 cents. 1 Link to comment Share on other sites More sharing options...
Rockwood Posted January 13, 2023 Share Posted January 13, 2023 It would be hard to rule out small bivalve mollusks, but ostracod is what comes to my mind first. 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 13, 2023 Share Posted January 13, 2023 Could also be sedimentary structures, or artifacts of breakage/spalling. I don't think any positive ID is possible, given the lack of detail. 1 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...
Rockwood Posted January 13, 2023 Share Posted January 13, 2023 1 hour ago, Fossildude19 said: Could also be sedimentary structures, or artifacts of breakage/spalling. A close look with a good lens might help. ' Could be all of the above. Link to comment Share on other sites More sharing options...
ClearLake Posted January 14, 2023 Share Posted January 14, 2023 On 1/13/2023 at 6:41 AM, Fossildude19 said: Could also be sedimentary structures, or artifacts of breakage/spalling. Very possible. The only thing that pushed me a bit more towards the ostracod interp. was the negative impression just above and right of center. If there were small pebbles in there, I could see it being the impression of one of those, but in this dense, dolomitic looking rock it made me lean more toward ostracod (or small bivalve) impression. Again, I agree nothing is certain and with some other evidence I could be swayed pretty easily. Link to comment Share on other sites More sharing options...
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