Description
This listing features a rare and scientifically significant fossil of Properisphinctes bernensis, an elegant ammonite species from the Callovian stage of the Middle Jurassic period. This beautifully preserved specimen was found in the well-known marine sedimentary layers near Plettenberg, Germany, a classic locality for Jurassic marine fossils.
Geological Context:
- Fossil Type: Ammonite (Extinct marine mollusc, relative of squid and octopus)
- Species: Properisphinctes bernensis (Salfeld, 1913)
- Order: Ammonitida
- Superfamily: Perisphinctoidea
- Family: Perisphinctidae
- Geological Stage: Callovian (c. 166.1 to 161.2 million years ago)
- Formation: Marine marl and limestone beds of the Swabian Jura
- Depositional Environment: Shallow marine shelf with carbonate and marl sedimentation
Properisphinctes is a genus known for its gracefully ribbed, evolute shells, and P. bernensis is particularly valued for its stratigraphic importance and aesthetic symmetry. It is a key biostratigraphic species for correlating Callovian sequences across Central Europe.
Morphology & Notable Features:
- Evolute shell with exposed inner whorls
- Fine, bifurcating ribs that curve gently across the flanks
- Rounded to slightly angular venter with no keel
- Moderate umbilicus and compressed cross-section
- Typical Perisphinctid suture patterns
Biozone Association: Properisphinctes bernensis is associated with the Bernensis Biohorizon of the Middle Callovian, particularly relevant to German and Swiss Jurassic stratigraphy. It provides key data for ammonite-based zonation schemes.
Specimen Details:
- Origin: Plettenberg, Baden-Württemberg, Germany
- Age: Callovian Stage, Middle Jurassic (~163 million years old)
- Scale: Scale rule square/cube = 1cm. Please refer to the photo for exact size
- Condition: Selected for completeness and preservation
- Photo: The fossil shown is the exact specimen you will receive
Certification & Authenticity: All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. We carefully choose each piece for its scientific integrity, collector value, and natural beauty.
This rare Properisphinctes bernensis ammonite from the classic Jurassic strata of Germany is a collector-grade fossil, ideal for enthusiasts, educators, and palaeontologists seeking high-quality and regionally significant specimens.






Reviews
There are no reviews yet.