Description: Specimen: Rare museum quality specimen with beautiful fossil plants , rare extinct fossil seed ferns species: Eusphenopteris obtusiloba BRONGNIART & Mariopteris muricata SCHLOTHEIM Locality: All detailed and accurate data will be provided with the specimenStratigraphy: Upper Carboniferous, Middle Pennsylvanian, Westphalian B Age: ca. 310 - 315 Mya Matrix dimensions: ca 13,0 x 6,5 x 2,0 cm ( white square on pictures is 1,0 x 1,0 cm ) Description: Rare specimen with beautiful fossil plants - extinct fossil seed ferns species: Eusphenopteris obtusiloba BRONGNIART & Mariopteris muricata SCHLOTHEIM Eusphenopterids was a seed ferns. It were characterized by round-lobed leaflets exhibiting conspicuous stalk-like attachments to the main stem. The lower basal leaflets are usually more lobate and well-developed. The leaflets of Eusphenopteris never have toothed margins.Systematic:Kingdom: Chlorobiota - Plantae Family: LyginopteridaeGenus: Eusphenopteris Novik 1947 Eusphenopteris obtusiloba ( BRONGNIART ) E. O. NOVIK Seed ferns (Pteridosperms) were group of seed plants from the Carboniferous and Permian periods (about 360 to 250 million years ago). Some, such as Medullosa, grew as upright, unbranched woody trunks topped with a crown of large fernlike fronds; others, such as Mariopterids, were woody vines. All had fernlike foliage; however, they reproduced by seeds, with ovules and pollen organs attached to the fronds. Gamete - producing structures in the seeds were surrounded by a hard inner integument and a fleshy outer layer. These features have led some authorities to speculate that these seeds may have been dispersed by animals. Some seeds were large. ( Pachytesta gigantea, a seed of Medullosa, grew up to 7 cm long.) Pollen organs of seed ferns were also large and complex and were commonly made up of many pollen sacs fused into a large structure.
Price: 69 USD
Location: Sosnowiec
End Time: 2024-12-04T06:33:13.000Z
Shipping Cost: 14 USD
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Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
