Extremely rare Eremopteris fern pre dinosaur plant fossil from old closed site

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Extremely rare Eremopteris fern pre dinosaur plant fossil from old closed site:
$38.00

Specimen:Very rare seed fern:Eremopteris artemisiaephyllioides Crepin, also with Neuropteris seed fern on bigplate

Locality:Poland,GZW Upper Silesia Coal Basin, Gliwice

Stratigraphy:UpperCarboniferous, Pennsylvanian / Westphal B-Orzeskie Beds

Age:ca305 Mya

Matrix dimensions: 17,0 x 12,0 x 2,0 cm

Description:

Specimen ofdelicate and extremely rareseed fern genus and Crepin ( synonym name: Eremopteris artimisiaefolia) preserved on shalefrom theOrzeskeBeds (Westphal B )from the Polish region of the GZW, Upper Silesia CoalBasin.

Seed ferns (Pteridosperms) were group of seed plants from the Carboniferous andPermian periods (about 360 to 250 million years ago). Some, such as Medullosa,grew as upright, unbranched woody trunks topped with a crown of large fernlikefronds; others, such as Palmatopterids, were woody vines.

All had fernlikefoliage; however, they reproduced by seeds, with ovules and pollen organsattached to the fronds. Gamete - producing structures in the seeds weresurrounded by a hard inner integument and a fleshy outer layer. These featureshave led some authorities to speculate that these seeds may have been dispersedby animals. Some seeds were large. ( Pachytesta gigantea, a seed ofMedullosa, grew up to 7 cm long.) Pollen organs of seed ferns were also largeand complex and were commonly made up of many pollen sacs fused into a largestructure.

Systematic:

Kingdom: Chlorobionta / Plantae

Family: Lyginopteridae

Genus:Eremopteris

Species:Eremopteris artemisiaephyllioides Crepin (synonym name: Eremopteris artimisiaefolia )

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