Sporophytes of polysporangiate land plants from the early Silurian period may have been photosynthetically autonomous

@article{Libertn2018SporophytesOP,
  title={Sporophytes of polysporangiate land plants from the early Silurian period may have been photosynthetically autonomous},
  author={Milan Libert{\'i}n and Jiř{\'i} Kva{\vc}ek and Jiř{\'i} Bek and Viktor Ž{\'a}rsk{\'y} and Petr {\vS}torch},
  journal={Nature Plants},
  year={2018},
  volume={4},
  pages={269-271}
}
The colonization of land by vascular plants is an extremely important phase in Earth’s life history. This key evolutionary process is thought to have begun during the Middle Cambrian1 period and culminated in the Silurian/Early Devonian period (interval about 509–393 million years ago (Ma)), and is documented primarily by microfossils (that is, by dispersed spores, phytodebris including fragments of algae, tissues, sporangia and cuticles), tubes and rare megafossils2. A newly recognized fossil… 

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