Passendorferia birmensdorfensis Fossil Ammonite – Middle Oxfordian, Jurassic – Charente, France – Genuine Specimen + COA

Description

For sale is an authentic Passendorferia birmensdorfensis ammonite fossil from the Middle Oxfordian stage of the Jurassic Period, discovered in Charente, France. This beautifully preserved ammonite displays the distinct ribbed shell and coiled morphology characteristic of the Passendorferia genus, making it an excellent addition to any fossil collection.

Geology & Fossil Type:

This ammonite originates from the Middle Oxfordian, a stage within the Upper Jurassic, dating back approximately 160 million years. The Oxfordian was a time of widespread shallow marine environments, where ammonites like Passendorferia flourished. These fossils are crucial for biostratigraphic dating, allowing geologists to correlate Jurassic rock layers across different regions.

Passendorferia birmensdorfensis belonged to the subclass Ammonoidea, a now-extinct group of marine mollusks closely related to modern squids and octopuses. These creatures thrived in ancient oceans, using their chambered shells for buoyancy control, which allowed them to move efficiently through prehistoric seas. Their finely ribbed shells provided both protection from predators and structural integrity for deep-sea navigation.

Fossil Details:

• 100% Genuine Fossil – No Replicas or Synthetics
• Comes with a Certificate of Authenticity
• From the Alice Purnell Collection, a highly regarded fossil collection
• Scale cube = 1cm for size reference (please see photos for full dimensions)
• You will receive the exact specimen shown in the listing

This rare Passendorferia birmensdorfensis ammonite fossil is an ideal specimen for fossil collectors, educators, and natural history enthusiasts. Whether displayed as a stunning showcase piece, studied for its geological significance, or given as a unique prehistoric gift, this ammonite is a remarkable artifact from the Jurassic seas.

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