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Featured Fossil


This page will feature fossils from all geological time periods. Each image will have

some background about the specimen, its age, where it was found, and a nugget

of interesting information. Not every specimen will be perfectly preserved -

but all are a marvel of the natural world!


Pygidium of Crassiproteus crassimarginatus

Fossil Type:



Crassiproteus crassimarginatus (Hall)


Jeffersonville Limestone


Eifelian, Middle Devonian


Louisville, Jefferson Co., Kentucky


One of the more common trilobites in the Jeffersonville Limestone, it has a rounded-triangular pygidium. Complete specimens are very rare. Kenny Popp collection.

Date Posted:

April 17, 2014


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Created April 12, 2012