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Llewellyn Formation Plants of Pennsylvania

Llewellyn Formation Plants of Pennsylvania
historianmichael
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historianmichael
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Fossil plants collected by the author in several trips to various exposures of the Late Pennsylvanian Llewellyn Formation in Pennsylvania's "Coal Country"

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FossilDAWG

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Nice collection!  What references are you using to ID these plants?

 

Don

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historianmichael

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38 minutes ago, FossilDAWG said:

Nice collection!  What references are you using to ID these plants?

 

Don

 

Thank you! I started with "Fossil Plants from the Anthracite Coal Fields of Eastern Pennsylvania," but at the suggestion of another member, I picked up "A Comprehensive Guide to the Fossil Flora of Mazon Creek." Jack Wittry's guide has the more up-to-date names for many of the ferns. Although the Llewellyn Formation is younger by several million years in age to the Carbondale Formation, most of the plants are the same, just at different percentages. Pecopterids were the dominant plant group in Llewellyn Formation plants, while seed ferns were the dominant variety at Mazon Creek.

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