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Big rare oldest Silurian fossil first land plant - Cooksonia
Big rare oldest Silurian fossil first land plant - Cooksonia
Big rare oldest Silurian fossil first land plant - Cooksonia

Big rare oldest Silurian fossil first land plant - Cooksonia

$ 34.32

Availability: 100 in stock
  • Condition: New
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  • Item must be returned within: 30 Days
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    Description

    Amberabg
    Big, rare oldest Silurian fossil land plant.
    Species: Cooksonia sp.
    Upper Silurian (Ludlowian/Pridolian) of the Holy Cross Mountains, Poland. Kielce region
    Dimension: matrix 30x14mm Cooksonia 15mm
    The first fossil records of vascular plants, that is, land plants with tissues that carry food, appeared in the second half of the Silurian period. The earliest known representatives of this group are the Cooksonia (mostly from the northern hemisphere) and Baragwanathia (from Australia). A primitive Silurian land plant with xylem and phloem but no differentiation in root, stem or leaf, was much-branched Psilophyton. This plant reproducied by spores and respired through stomata on every surface, and probably photosynthesizing in every tissue exposed to light.
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