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ID of 30x35mm Coral Fossil

GWW

By GWW
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GWW Newbie

GWW

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Location:  Hancock County, Illinois USA    Limestone Quarry 150ft below surface

 

what type, age and what are the 1mm round nodules with possible stems on the facing side in first picture.

 

any other info greatly appreciated.

54A4B497-2DE1-420C-836A-44AC1D0C1E36.jpeg

5156879D-D933-4531-BDA5-9F41919B78D9.jpeg

757AD61A-8B23-4699-8D74-D453E440C59A.jpeg

Edited by GWW
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  • GWW changed the title to ID of 30x35mm Coral Fossil
Rockwood Regular Member

Rockwood

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Rugose horn coral.  About 250 million years ago they went extinct in the end Permian extinction event. The nodules are beekite a diagenetic silicate mineral. 

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GWW Newbie

GWW

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Very cool, thank you much appreciated.  Have had this fossil since college rappelling days at the quarry.  Only wish I had picked up more of these because there were hundreds at that time.

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