Graptolitoidea

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Synopsis of the mode of growth and development of the graptolitic genus Diplograptus.
Rudolf Ruedemann

American Journal of Science June 1895, s3-49 (294) 453-455; DOI: https://doi.org/10.2475/ajs.s3-49.294.453
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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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On the age of the glazed and contorted slaty rocks in the vicinity of Schodock Landing, Rensselaer County, New York
Silas Watson Ford

American Journal of Science September 1884, s3-28 (165) 206-208; DOI: https://doi.org/10.2475/ajs.s3-28.165.206
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On the discovery of Utica slate graptolites on the west side of the Hudson a few miles north of Poughkeepsie, New York [identified by R. P. Whitfield]
Henry Booth and Robert Parr Whitfield

American Journal of Science November 1883, s3-26 (155) 380; DOI: https://doi.org/10.2475/ajs.s3-26.155.380

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