Dorsal Fin Spine Fossil
By Samurai
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Even Though it is Poorly preserved it measures just about 12.7cm
there is not an ID on this one, although I assume it to be from a Hybodus or a large Ctenacanthus since this is found in Pennsylvanian aged rock
There are Phosphatic nodules present in this limestone chunk suggesting it is from the formation: Muncie Creek shale
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