Extremely rare Fossil Plant Megaphyton preserved air roots points on surface !!!

Description

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Specimen:
Museum quality , rare specimen
of
Megaphyton sp.
Artis 1825
arborescent "
tree fern" trunk showing frond scars and air roots
with preserved air roots (points on the surface)
!!!
Locality:
Poland, GZW Upper Silesia Coal Basin
Stratigraphy:
Upper Carboniferous - Westphalian A
Age:
ca 315 Mya
Matrix dimensions:
ca 13,0 x 10,5 x 3,5 cm ( white square on pictures is 1,0 x 1,0 cm )
Description:
Museum specimen
of
Megaphyton sp.
Artis 1825
arborescent "
tree fern" trunk showing frond scars and air roots
with preserved air roots (points on the surface)
!!!  S
pecimen was stabilized using glue
which does not reduce its value.
The specimens of Megaphyton are extremely rare!
Megaphyton - ( tree fern stem)
shows vertical row of the petiolar scars after big leaves / fronds. Megaphyton which grew to 10m in height, and is associated with leaves of the true spore ferns genus
Pecopteris
and other extinct tree ferns.
The group "true arborescent tree ferns" includes foliage that have been shown to produce spores on the underside of their leaves. Some plants in this group were ground dwelling and others may have been epiphytes. Though most of the plants are treated as tree ferns and have been found to be related to an extand order of ferns called the Marattiales. Today the Marattiales consist of two genera Angiopteris and Marattia.
Systematic:
Division:
Trachaeophyta (Pteropsida)
Class:
Marattiopsida
Order:
Marattiales
Family:
Marattioids
Genus:
Megaphyton sp.
Artis 1825