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Pennsylvanian trilobite ID confirmation


KCMOfossil

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This appears to me to be a somewhat smashed axial lobe of a Ameura missouriensis, and the first one I have found with the thorax.   I found it in the Winterset Limestone Member of the Pennsylvanian, Kansas City Group, near Kansas City, Missouri.  Does this ID seem right to you folks?  Actually, the thing I want to do is exclude the (highly remote, I know) possibility of an eurypterid.  I'm not sure if there is much more to prep as the fossil just disappears into the matrix. 

 

Russ

 

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Orthocone cephalopod, I would think. Not a trilobite. 

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    Tim    -  VETERAN SHALE SPLITTER

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15 minutes ago, Fossildude19 said:

Orthocone cephalopod, I would think. Not a trilobite. 

Thanks for the quick reply.  That certainly fits the specimen well, and orthocone cephalopods are not uncommon here. 

 

5 minutes ago, Jackson g said:

I think Tim's right on the money.

I agree.  And knowing that it is a cephalopod will help me proceed a bit further in prepping it. 

 

Thanks, guys, for pointing me the right direction. 

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