-40%

RARE big Mississipian Lower Carboniferous primitive fossil fern Spehnopteridium

$ 24.28

Availability: 100 in stock
  • All returns accepted: Returns Accepted
  • Modified Item: No
  • Return shipping will be paid by: Buyer
  • Restocking Fee: No
  • Refund will be given as: Money back or replacement (buyer's choice)
  • Mazon Creek like: burmite
  • Item must be returned within: 30 Days
  • Condition: New

    Description

    My genuine specimens will be delivered with a "Certificate of authenticity, age and origin" and scientific papers allowing plant identification !
    I combine shipping costs.
    Each item is different, so please wait with payment after purchase -
    I will send You a combine invoice.
    Usually, it will be cost of shipping the heaviest item.
    Specimen:
    Extremely RARE
    ,
    Lower Carboniferous, Mississipian – Serpukhovian
    fossils plant, fern
    Sphenopteridium
    (
    Sphenopteris
    )
    adiantoides
    SCHLOTHEIM with
    Heterangium grievei
    Williamson
    Locality:
    Poland,
    from an old, non-existent outcrop. T
    he exact location will be included with certificate to the purchase item
    Stratigraphy:
    Lower Carboniferous, Mississipian – Serpukhovian
    Age:
    ca. 330 Mya
    Matrix dimensions:
    ca. 18,5 x 9,5 x 2,0 cm ( white square on pictures is 1,0 x 1,0 cm)
    Description:
    Extremely RARE, Lower Carboniferous - Mississipian fossil plant, fern
    Sphenopteridium
    (
    Sphenopteris
    )
    adiantoides
    SCHLOTHEIM
    =
    Sphenopteris elegans
    BRONGNIART
    ( later
    synonym for name ) with
    characteristic for the lower Carboniferous striated stem called
    Heterangium grievei
    WILLIAMSON
    from an old, non-existent outcrop.
    Lower Carboniferous - Mississipian plants are extremely rare
    in fossil collections around the world
    and are found only in a few small locations around the world.
    This is due to the fact that these plants grew millions years before the carbon-forming flora from which coal was formed and the Lower Carboniferous layers are not exploited for coal mining.
    Systematic:
    Kingdom:        Chlorobiota - Plantae
    Family:            Lyginopteridae
    Genus:            Sphenopteridium ( Sphenopteris )
    Species:
    Sphenopteridium (Sphenopteris) adiantoides
    SCHLOTHEIM
    =
    Sphenopteris elegans
    BRONGNIART
    with
    Heterangium grievei
    WILLIAMSON