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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