2.4" Fossil Pennsylvanian Horsetail (Asterophyllites) - France

This is a 2.4" Pennsylvanian aged fossil horsetail (Asterophyllites) from Griassessac, France. It is a beautiful specimen in excellent condition and shows eight whorls (clusters of leaflets). The black fossils stand out nicely against the grey rock. A second stalk with four whorls is also visible.

This is a carbon film fossil, a two dimensional image of an organism. Unlike impression fossils, carbon film fossils show no evidence other than a color change in the rock. All of the original organism has disappeared with the exception of the carbon contained with in it. This is deposited on the rock and forms the image we call the fossil. This usually occurs when a soft bodied organism, is buried in multiple layers of sediment, underwater and is slowly dissolved until is has disappeared. This leaves only a microscopically thin layer of carbon in the shape of the original organism.

Comes with an acrylic stand.
DETAILS
SPECIES
Asterophyllites equisetiformis
LOCATION
Graissessac, France
SIZE
2.4", 2.6 x 1.8" rock
CATEGORY
ITEM
#114630
GUARANTEE
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.