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

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Ageleodus pectinatus Fossil Teeth

Here is a picture of two sets of fossil teeth from a primitive shark called Ageleodus pectinatus (Agassiz, 1838). Note fingernails in picture of an idea of how small these fossils are. It existed in the  Upper Devonian Period and was found in the Catskill Formation Duncannon Member of Red Hill Pennsylvania USA.

Thanks to Kenny for the image. 

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