Fossil plant Stigmaria ficoides coal age classic lycopsid Lepidodendron root !

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.
Specimen:
Classic , detailed fossil plant - Lepidodendron root
Stigmaria ficoides
STERNBERG
Locality:
All detailed and accurate data will be provided with the specimen
Stratigraphy:
Upper Carboniferous  – Pennsylvanian -  Westphalian B
Age:
ca. 310 / 315 Mya,
Matrix dimensions:
ca. 8,0 x 5,0 x 3,0 cm ( white square - scale bar on pictures is 1,0 x 1,0 cm)
Description:
Classic , detailed fossil plant - Lepidodendron root
Stigmaria ficoides
STERNBERG
Until now well understood are three species:
Stigmaria ficoides
,
Stigmaria rugulosa
and
Stigmaria reticulata
.
Stigmaria are a type of branching tree root fossil found in
Carboniferous
rocks. They were the roots of
coal forest lycopsid
trees such as
Sigillaria
and
Lepidodendron
.
Stigmaria
is the generic name given to fossil
root
casts
of various tree species of the Pennsylvanian Period, regardless of the form genera and species. The round nodes on the surface of
stigmaria
are scars where ribbon-like rootlets were once attached and arranged radially about
stigmaria
like the bristles of a bottle brush.
A flattened vascular tube is frequently visible on the end of
stigmaria
, located just off center of the axis of the root and running longitudinally down its length, which provided fluids  and perhaps nutrients to the main tree in life.
Systematic:
Division:
Tracheophyta (Lycoposida)
Class:
Lycopodinae
Order:
Lycophodiales
Family:
Sigillariaceae
Genus:
Stigmaria
Species:
Stigmaria ficoides
STERNBERG