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MSirmon

Found this piece while digging into the hillside behind the house near lake Wister in Southeast Oklahoma. The area is primarily Pennsylvanian and I have found some beautiful specimens on the land. There are a lot of limestone and sandstone ledges and outcroppings all over the property. I do t see any tooling marks on the edges so believe the shape is natural but not sure what the texturing is. Any help would be appreciated.

12D7F66E-D0D3-4FCB-B0E9-02F039C19401.jpeg

F94489CD-4DCC-4312-944C-5733A8F20C5B.jpeg

19CC1EBD-D1E7-4789-A56E-F6DE1102F1DD.jpeg

3343AD62-DDDE-4E3E-B6A4-A6806165DACB.jpeg

C4D11AA2-CAB5-41A3-8B5B-D58D59CD498D.jpeg

0636D926-8032-47D0-87BD-0E0FE40B42AE.jpeg

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ynot

Maybe trace fossils or an algae mat but could be a non biological feature.

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Bronzviking

Can I get a high-res close-up of the donut shaped bumps? (upper left of last pic) Thanks

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MSirmon
4 minutes ago, Bronzviking said:

Can I get a high-res close-up of the donut shaped bumps? (upper left of last pic) Thanks

Will this work?

CDD28733-070C-4D44-A96D-BE6EF557BD5B.jpeg

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Mark Kmiecik

Leaning heavily towards inorganic, but it wouldn't hurt to see the edges.

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ynot
6 hours ago, Mark Kmiecik said:

, but it wouldn't hurt to see the edges.

First and fourth pictures.

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Mark Kmiecik
1 minute ago, ynot said:

First and fourth pictures.

Aha! Now I got it. Thank you. 

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Zenmaster6

Looks similar to the Nemiana simplex. 

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supertramp
abyssunder

I would go with the latter.

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