Very Rare extinct sphenopterid fern pre dinosaur fossil plant Sturia amoena !

Description

My genuine specimens will be delivered with a "Certificate of authenticity, age and origin"  and scientific papers allowing plant identification !
I combine the 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.
S
pecimen:
Very Rare , unusual interesting extinct fossil sphenopterid fern:
Sphenopteris ( Sturia ) amoena
STUR
Locality:
All detailed data will be provided with the specimen
Stratigraphy:
Upper Carboniferous, Middle Pennsylvanian, Namurian B "Siodlowe" Beds
Age:
ca. 320 Mya,
Matrix dimensions:
ca. 11,5 x 8,0 x 2,5 cm ( white square - scale bar on pictures is 1,0 x 1,0 cm)
Description:
Very rare, Coal age - Upper Carboniferous - Namurian extinct sphenopterid fossil fern:
Sphenopteris ( Sturia ) amoena
STUR
Systematic:
Division:                Tracheophyta (Sphenopsida)
Kingdom:               Chlorobiota
Plantae
Family:                   Lyginopteridaceae
Genus:                   SPhenopteris
Species:
Sphenopteris ( Sturia ) amoena
STUR