Fossil plant Carboniferous tree seed fern leaf Neuralethopteris leaf for Sale

Fossil plant Carboniferous tree seed fern leaf Neuralethopteris leaf For Sale

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Fossil plant Carboniferous tree seed fern leaf Neuralethopteris leaf:
$24.00

My specimens aregenuineandbe delivered with a "Certificate of authenticity, age and origin" and scientific papers allowing plant identification !I combine the shipping costs. Each item is different, sopleasewait with payment after purchase-I will send You a combine invoice. Usually, it will be cost of shipping the heaviest item.

Specimen: Nice specimen of rarer Carboniferous seed fern order: Neuralethopteris neuropteroidesSUSTA

Locality: All accurate data will be provided with the specimen

Stratigraphy: Upper Carboniferous, Pennsylvanian, Namurian B

Age: ca. 320 Mya,

Matrixdimensions:ca. 13,0 x 7,5 x 3,0 cm ( white square -scale bar on picturesis 1,0 x 1,0 cm)

Description:

Carboniferous fossil plant, classicpyritized fernwith perfectly preservet venation NeuralethopterisneuropteroidesSUSTA !These seed ferns occurredin Namurian B aseed fern having ancestral, common featuresof twolater, otherseed ferngenera - Alethopteridsand 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

Species: style="font-family: Arial, sans-serif; color: black; margin: 0cm 0cm 0pt; line-height: normal;">