Rarer big museum 3D extinct pre dinosaur fossil plant fern Neuralethopteris

Description

My specimens are genuine and will be delivered with a "Certificate of authenticity, age and origin"  and scientific papers allowing plant identification !!!
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Specimen
:      Rare coal age extinct pre dinosaur fossil plant , seed fern
Neuralethopteris neuropteroides
SUSTA
Locality:
All detailed data will be provided with the specimen
Stratigraphy:
Upper Carboniferous - Pennsylvanian / Namurian B
Age:
ca. 320 Mya
Matrix dimensions:
ca. 14,0 x 10,5 x 2,0 cm ( white square on pictures is 1,0 x 1,0 cm )
Description:
Rarer specimen of beautiful pre dinosaur Carboniferous fossil plant , classic medulosean fern with perfectly preservet venation
Neuralethopteris neuropteroides
SUSTA ! Bigest Neuralethopteris species.
These seed ferns occurred in Namurian B layers.
Neuralethopteris
is
characterized as a seed fern having ancestral, common features of two later, other seed fern genera -
Alethopterids
and
Neuropterids
. 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.
Systematic:
Ordo:
Medullosales
Familia:
Whitleseyinae
Genus:
Neuralethopteris
Species:
Neuralethopteris neuropteroides
SUSTA