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Trilobite Fossils From Pennsylvania?


pennsylvania3791

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I recently found this sample in a hill dug out for the construction of a new Walmart. I think the age of the rock is Silurian, but I need to get a more detailed map to double-check. It looks to me like there might be three pieces of trilobites on the rock. One bigger and one smaller at the center, and the other at the top left, kind of out of focus. I am thinking it is may be the anterior margin of the cephalon?

post-19327-0-84375500-1438951706_thumb.jpg

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I agree, those are trilobite thorax segments. They are not, on their own, very diagnostic of age, as most of the Paleozoic is present in Pennsylvania and could produce trilobites. However it sounds as if you have access to maps that can help you out. If you let us know the general area (nearby town for example) perhaps someone could offer an informed opinion about the age and what you might find.

Don

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