Potomac formation

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Evidence of the fossil plants as to the age of the Potomac Formation
Lester Frank Ward

American Journal of Science August 1888, s3-36 (212) 119-131; DOI: https://doi.org/10.2475/ajs.s3-36.212.119
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Three formations of the Middle Atlantic slope
W. J. McGee

American Journal of Science June 1888, s3-35 (210) 448-466; DOI: https://doi.org/10.2475/ajs.s3-35.210.448
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Three formations of the Middle Atlantic slope
W. J. McGee

American Journal of Science May 1888, s3-35 (209) 367-388; DOI: https://doi.org/10.2475/ajs.s3-35.209.367
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Three formations of the Middle Atlantic slope
W. J. McGee

American Journal of Science April 1888, s3-35 (208) 328-330; DOI: https://doi.org/10.2475/ajs.s3-35.208.328
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Notice of a new genus of Sauropoda and other new dinosaurs from the Potomac Formation
Othniel Charles Marsh

American Journal of Science January 1888, s3-35 (205) 89-94; DOI: https://doi.org/10.2475/ajs.s3-35.205.89

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