| 21. | The first amniotes apparently arose in the Pennsylvanian subperiod of the Carboniferous.
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| 22. | Meade's 1st Brigade of Pennsylvanians, under Brig.
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| 23. | DeVille was fired and replaced by Pennsylvanian guitarist Richie Kotzen.
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| 24. | Delawareans would meet in New Castle and Pennsylvanians would gather in Philadelphia.
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| 25. | The War of 1812 drew 14, 000 Pennsylvanians into active service.
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| 26. | They were aggressive to the Pennsylvanians who settled near them.
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| 27. | Pennsylvanian pig iron was cheaper to produce than that of the Works.
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| 28. | They were intruded during the Pennsylvanian by the Saint-Mathieu Leucogranite.
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| 29. | Burrick spent most of his college years working at The Daily Pennsylvanian.
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| 30. | Fossils are known from the Pennsylvanian coal deposits of Linton, Ohio.
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