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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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Lexington Limestone Microfossils

These microfossils were found in the Lexington Limestone of Franklin County, Kentucky. They existed in the Ordovician Period. This first fossil is a snail or gastropod. It appears to be composed of some sort of black material.  All fossils are about 1 mm in length. A microscope was used to magnify 40x.


This fossil might be a crinoid stem fragment.

 
Thanks to an identification blog visitor Solius.  This is a "Hyolithos; an enigmatic creature that some propose are mollusks."
 

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