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Research Material edit
The Ames Limestone also extends deeply into Pennsylvania and Ohio. There are some good articles about it to help fill out this Stub.
- THE AMES LIMESTONE OF WESTERN PENNSYLVANIA - https://www.jstor.org/stable/44109082
- THE ICHNOLOGY OF THE LATE PENNSYLVANIAN AMES LIMESTONE IN SOUTHEASTERN OHIO - https://gsa.confex.com/gsa/2009AM/finalprogram/abstract_165907.htm