6.1" Jurassic Ammonite (Harpoceras) Fossil - Germany
This is a 6.1" wide ammonite of the genus Harpoceras, collected from the Posidonia Shale of Germany. It has been compressed and is preserved on a black shale in a partially pyritized state. The ammonite is nicely centered on an 11.2 x 8.8" slab of shale. The shale also contains bivalve fossils and partial Dactylioceras ammonite fossils. Comes with an acrylic/metal display stand.
The Posidonia Shale outcrops in the Holzmaden, Germany area have been commercially mined for centuries and has been used for such things as tile, table tops and fireplace hearths. These quarrying operations have also uncovered a vast treasure trove of beautifully preserved, Early Jurassic (~183 million years old) fossils. The lower shale layers have produced fossils including ichthyosaurs with preserved skin and soft tissue impressions.