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Ordovician

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    Bridging the gap between the foreland and hinterland II: Geochronology and tectonic setting of Ordovician magmatism and basin formation on the Laurentian margin of New England and Newfoundland
    Francis A. Macdonald, Paul M. Karabinos, James L. Crowley, Eben B. Hodgin, Peter W. Crockford and John W. Delano
    American Journal of Science May 2017, 317 (5) 555-596; DOI: https://doi.org/10.2475/05.2017.02
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    On the age of the manganese beds of the Batesville region of Arkansas
    Henry Shaler Williams
    American Journal of Science October 1894, s3-48 (286) 325-331; DOI: https://doi.org/10.2475/ajs.s3-48.286.325
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    New fossil localities in the early Paleozoics of Pennsylvania, New Jersey, and Vermont, with remarks on the close similarity of the lithologic features of these Paleozoics
    August Frederick Foerste
    American Journal of Science December 1893, s3-46 (276) 435-444; DOI: https://doi.org/10.2475/ajs.s3-46.276.435
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    Fossils in the "Archean" rocks of central Piedmont Virginia
    Nelson Horatio Darton
    American Journal of Science July 1892, s3-44 (259) 50-52; DOI: https://doi.org/10.2475/ajs.s3-44.259.50
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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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    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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    A review of Dr. R. W. Ells's second report on the geology of a portion of the Province of Quebec, with additional notes on the Quebec Group
    C. D. Walcott
    American Journal of Science February 1890, s3-39 (230) 101-115; DOI: https://doi.org/10.2475/ajs.s3-39.230.101
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    A new meteorite from Mexico
    James Edward Whitfield
    American Journal of Science June 1889, s3-37 (222) 439-440; DOI: https://doi.org/10.2475/ajs.s3-37.222.439
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    The Taconic system of Emmons and the use of the name Taconic in geologic nomenclature
    C. D. Malcom
    American Journal of Science April 1888, s3-35 (208) 307-327; DOI: https://doi.org/10.2475/ajs.s3-35.208.307

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