Evidence for a conducting strand in early Silurian (Llandoverian) plants: implications for the evolution of the land plants

@article{Niklas1983EvidenceFA,
  title={Evidence for a conducting strand in early Silurian (Llandoverian) plants: implications for the evolution of the land plants},
  author={Karl J. Niklas and Vassiliki Betty Smocovitis},
  journal={Paleobiology},
  year={1983},
  volume={9},
  pages={126 - 137}
}
Macerations of fragmented plant compressions of Silurian (Llandoverian) age yield sheets of organic material bearing ridges and depressions (interpreted as corresponding to surficial dimensions of cells), fragments of smooth walled tubular elements, and fragments of tubular elements with differentially thickened walls (“banded tubes”). A fragment of tissue (1.2 mm long), consisting of smooth walled tubes (17 ± 6.9 μm in diameter), surrounding 2–3 larger (18.8 ± 2.1 μm in diameter) banded tubes… 
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35 Citations

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Dispersed tubes and filaments from the uppermost Ordovician, Silurian and Lower Devonian of the Anglo-Welsh Basin of Great Britain are described and classified using the artificial Anteturma system…
Cells and tissues in the vegetative sporophytes of early land plants.
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  • 1993
TLDR
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References

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Evidence of non-vascular land plants from the early Silurian (Llandoverian) of Virginia, U.S.A.
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TLDR
An explanation for the observed events in the transition of sieve filaments to trumpet filaments is suggested, and it is argued that trumpet füaments are produced from sieve Filaments by mechanical stretching in longitudinal sections of young stipe medulla.
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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