Sphenopsida

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A contribution to the geology of Rhode Island (With a map; Plate VI)
T. N. Dale

American Journal of Science March 1884, s3-27 (159) 217-228; DOI: https://doi.org/10.2475/ajs.s3-27.159.217
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Note on some fossil plants from northern China
J. S. Newberry

American Journal of Science August 1883, s3-26 (152) 123-127; DOI: https://doi.org/10.2475/ajs.s3-26.152.123
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Notes on the Vespertine strata of Virginia and West Virginia
William M. Fontaine

American Journal of Science February 1877, s3-13 (74) 115-123; DOI: https://doi.org/10.2475/ajs.s3-13.74.115
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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; 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 July 1860, s2-30 (88) 63-74; DOI: https://doi.org/10.2475/ajs.s2-30.88.63

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