Pteridophyta

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Sir William Jackson Hooker
Anonymous

American Journal of Science January 1866, s2-41 (121) 1-10; DOI: https://doi.org/10.2475/ajs.s2-41.121.1
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On the flora of the Devonian period in northeastern America
J. W. Dawson

American Journal of Science July 1863, s2-36 (106) 41-42; DOI: https://doi.org/10.2475/ajs.s2-36.106.41
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On the flora of the Devonian period in northeastern America
J. W. Dawson

American Journal of Science May 1863, s2-35 (105) 311-319; DOI: https://doi.org/10.2475/ajs.s2-35.105.311
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On some questions concerning the coal formations of North America
Leo Lesquereux

American Journal of Science May 1863, s2-35 (105) 375-386; DOI: https://doi.org/10.2475/ajs.s2-35.105.375
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Enumeration of the plants of Dr. Parry's collection in the Rocky Mountains in 1861
Asa Gray

American Journal of Science May 1862, s2-33 (99) 404-411; DOI: https://doi.org/10.2475/ajs.s2-33.99.404
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On some questions concerning the coal formations of North America; families, genera and species of coal plants of the United States
Leo Lesquereux

American Journal of Science March 1862, s2-33 (98) 206-216; DOI: https://doi.org/10.2475/ajs.s2-33.98.206
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On some questions concerning the coal formations of North America
Leo Lesquereux

American Journal of Science September 1861, s2-32 (95) 193-205; DOI: https://doi.org/10.2475/ajs.s2-32.95.193
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On some questions concerning the coal formations of the United States
Leo Lesquereux

American Journal of Science July 1861, s2-32 (94) 15-25; DOI: https://doi.org/10.2475/ajs.s2-32.94.15
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On some questions concerning the coal formations of North America
Leo Lesquereux

American Journal of Science November 1860, s2-30 (90) 367-384; DOI: https://doi.org/10.2475/ajs.s2-30.90.367
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On some questions concerning the coal formations of North America
Leo Lesquereux

American Journal of Science July 1860, s2-30 (88) 63-74; DOI: https://doi.org/10.2475/ajs.s2-30.88.63

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