Petrified pine cone in a branch (Araucaria Mirabilis) - Patagonia, Argentina

Description

Petrified PINE CONE ARAUCARIA MIRABILIS on host BRANCH.
Composite professionally done.
Branch :
2 3/4" long x 1 5/8" diameter.
Pine cone 2 1/2" x 2 3/8"
One end of the branch is mirror polishing showing the cell structure.
Silicification has preserved the tiniest details of the tissue of both the cone and the bark on the branch, thus making it possible for the microscopic examination important to science, but also producing an object of rare natural beauty.
Jurassic Petrified pine cone in a section of a branch 165 million years old, from Santa Cruz Province, Patagonia region, Argentina.
Araucaria mirabilis
is an
extintct species of coniferous from Paragonia, Argentina
. It belongs to the
section Bunya
(the only living species of which is
Araucaria bidwillii
from
Australia
) of the
genus Araucaria.
Araucaria. mirabilis
are known from a very well preserved
silicified
wood and
cones
from the
Cerro cuadrado
, Petrified Forest, located in the Bella Vista ranch in Santa Cruz Province, (Patagonia region) Argentina.
The site was buried by a volcanic eruption during the
Middle Jurassic
, approximately 165
millon years ago.
This pine cones are some of the best well preserve fossils in the world.
The specimen shows the seeds all around the edge and the fibrous tissues practically intact due to a very slow and stabled silicified  process.
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