Paleozoic

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Mount Bob, Mount Ida, or Snake Hill [New York]
T. W. Harris

American Journal of Science March 1892, s3-43 (255) 236-238; DOI: https://doi.org/10.2475/ajs.s3-43.255.236
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The discovery of Clymenia in the fauna of the intumescens zone (Naples beds) of western New York, and its geological significance
John Mason Clarke

American Journal of Science January 1892, s3-43 (253) 57-63; DOI: https://doi.org/10.2475/ajs.s3-43.253.57
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The Permian of Texas
Ralph Stockman Tarr

American Journal of Science January 1892, s3-43 (253) 9-12; DOI: https://doi.org/10.2475/ajs.s3-43.253.9
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Notes on a reconnaissance of the Ouachita mountain system in Indian Territory
Robert Thomas Hill

American Journal of Science August 1891, s3-42 (248) 111-124; DOI: https://doi.org/10.2475/ajs.s3-42.248.111
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The Redrock sandstone of Marion County, Iowa
Charles Rollin Keyes

American Journal of Science April 1891, s3-41 (244) 273-276; DOI: https://doi.org/10.2475/ajs.s3-41.244.273
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Description of the Bernardston Series of metamorphic Upper Devonian rocks; Part II
B. K. Emerson

American Journal of Science November 1890, s3-40 (239) 362-374; DOI: https://doi.org/10.2475/ajs.s3-40.239.362
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A description of the "Bernardston series" of metamorphic upper Devonian rocks
Benjamin Kendall Emerson

American Journal of Science October 1890, s3-40 (238) 264-275; DOI: https://doi.org/10.2475/ajs.s3-40.238.264
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On the Keokuk beds at Keokuk, Iowa
Charles Henry Gordon

American Journal of Science October 1890, s3-40 (238) 295-300; DOI: https://doi.org/10.2475/ajs.s3-40.238.295
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Some Lower Silurian graptolites from northern Maine
W. W. Dodge

American Journal of Science August 1890, s3-40 (236) 153-155; DOI: https://doi.org/10.2475/ajs.s3-40.236.153
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Siderite basins of the Hudson River epoch [Columbia County, New York]
James Putnam Kimball

American Journal of Science August 1890, s3-40 (236) 155-160; DOI: https://doi.org/10.2475/ajs.s3-40.236.155

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