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Bibliographie (2)
R. J. Cuffey, J. D. Inners, and G. M. Fleeger, R. C. Smith II, J. C. Neubaum, R. C. Keen, L. Butts, H. L. Delano, Vr A. Neubaum, R. H. Howe. 2006. Geology of the Gettysburg battlefield: how Mesozoic events and processes impacted American history. Excursions in Geology and History: Field Trips in the Middle Atlantic States. Geological Society of America Field Guide 8:1-16
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R. S. Lull. 1915. Triassic life of the Connecticut Valley. State of Connecticut State Geological and Natural History Survey Bulletin 24:1-285
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