American coal-ball floras

@article{Andrews2008AmericanCF,
  title={American coal-ball floras},
  author={Henry N. Andrews},
  journal={The Botanical Review},
  year={2008},
  volume={17},
  pages={431-469}
}
  • H. Andrews
  • Published 1 June 1951
  • Geology
  • The Botanical Review
ConclusionInterest in American coal-ball floras has increased perceptibly in the past few years, and some attempts have been made in this brief review to point out current lines of research and what may be expected during the next decade or two. Two other topics might have been considered, namely, a detailed comparison with the European fossils, and a stratigraphic compilation of the American floras. Such considerations would, I believe, be premature at present. We have many genera and a… 
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TLDR
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TLDR
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The following notes are based on thin sections of coal balls, collected by Dr. A. C. NoE' or by the writer from the Pennsylvanian of Illinois, and are presented in three parts. I. Practically nothing
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TLDR
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