Cooksonia

Cooksonia

Cooksonia
Temporal range: Wenlock to Early Devonian[1][2]
Reconstruction of Cooksonia
Scientific classification Edit this classification
Kingdom: Plantae
Superdivision: Polysporangiomorpha
Form taxon: †Cooksonioidea
Genus: †Cooksonia
Lang, 1937
Type species
Cooksonia pertoni
Lang, 1937

Cooksonia is a prehistoric genus of land plant. Cooksonia dates back to the Middle Silurian, all the way to the Early Devonian.[1] Most fossils of Cooksonia were found in the United Kingdom in 1937.[3] Cooksonia is known as the earliest plant with a xylem, and so it is considered to be a transitional fossil between Bryophytes (Mosses and others) and Vascular Plants. [4]

Only the sporophyte (or spore-bearing) phase of the plant is known, and was only a few centimeters tall. It does not have leaves or roots, though might be rooted through rhizomes.[2]

References

  1. ↑ 1.0 1.1 Edwards, D. & Feehan, J. (1980), "Records of Cooksonia-type sporangia from late Wenlock strata in Ireland", Nature, 287 (5777): 41–42, Bibcode:1980Natur.287...41E, doi:10.1038/287041a0, S2CID 7958927
  2. ↑ 2.0 2.1 Boyce, C. Kevin (2008), "How green was Cooksonia? The importance of size in understanding the early evolution of physiology in the vascular plant lineage", Paleobiology, 34 (2): 179–194, doi:10.1666/0094-8373(2008)034[0179:HGWCTI]2.0.CO;2, S2CID 36688488
  3. ↑ Lang, W.H. (1937), "On the plant-remains from the Downtonian of England and Wales", Philosophical Transactions of the Royal Society B, 227 (544): 245–291, Bibcode:1937RSPTB.227..245L, doi:10.1098/rstb.1937.0004
  4. ↑ Freeman, Scott; Herron, Jon C. (2004). Evolutionary analysis (3rd ed.). Upper Saddle River, NJ: Pearson Education. p. 816. ISBN 978-0-13-101859-4.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.