Orthoceras Cross-Section in Matrix Fossil | Natural Fossilized Pyritized in Host Rock | Fammenian - Devonian | Kowala Formation, Poland
$33.00 CAD
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This is an interesting cross-sectional view of an orthoconic nautiloid, commonly known as Orthoceras. The fossil reveals the internal chambered architecture of the shell, visible as radiating sections surrounding the central siphuncle. Such cross-sections provide insight into the anatomy of these straight-shelled marine cephalopods that inhabited Paleozoic oceans for hundreds of millions of years.
The Kowala section situated in the southern part of the Holy Cross Mountains represents continuous sedimentation in almost the same facies across the Devonian-Carboniferous transition. Fossils occur in black, pyritic shales, gray calcareous shales, clayey marls and light gray biohermal limestones. In most cases fossils are preserved as totally flattened imprints, sometimes tectonically deformed. However, in some lenses perfect, pyritized molds of gastropods, goniatites, bivalvias, clymenias were found. This part of the profile represents lower Famennian.
Although dinosaurs are the most well-known fossil life forms, pyritized fossils are also a favorite among those familiar with Paleontology and are found in the rocks of all continents.
Name: Orthoceras Fossil
Age: Fammenian (Devonian)
Location: Kowala Formation, Poland
Geological unit: Kielce-Lagow Syncline
Size: max matrix: 73x58 mm, max fossil: 9 mm / approx. 61 gr
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