Description
This listing offers a rare and scientifically significant ammonite fossil: Psiloceras (Discamphiceras) nuertingense, from the Hettangian stage of the Early Jurassic, collected in the classic fossil-rich beds of Nürtingen, Baden-Württemberg, Germany. This ammonite represents some of the earliest faunal recovery following the Triassic-Jurassic extinction event.
Geological Context:
- Fossil Type: Ammonite (Extinct marine mollusc related to modern squid and nautilus)
- Species: Psiloceras (Discamphiceras) nuertingense (Mojsisovics, 1902)
- Order: Ammonitida
- Superfamily: Psiloceratoidea
- Family: Psiloceratidae
- Geological Stage: Hettangian (c. 201.3 to 199.3 million years ago)
- Formation: Black Jura (Schwarzer Jura alpha)
- Depositional Environment: Shallow marine shelf; fine-grained calcareous sedimentation
Psiloceras is one of the earliest ammonite genera to appear in the Jurassic following the end-Triassic mass extinction. P. nuertingense, in particular, is notable for its smooth shell and biostratigraphic utility, marking the base of the Jurassic in many stratigraphic columns.
Morphology & Notable Features:
- Very involute, smooth discoidal shell with minimal ribbing
- Rounded venter with no keel
- Deep umbilicus and fine growth lines visible in high-quality preservation
- Distinguished by its compressed form and lack of ornamentation
- Used as a zonal fossil in Hettangian biostratigraphy
Biozone Association: Psiloceras nuertingense defines the Psiloceras nuertingense Zone, which is internationally recognised as the base of the Jurassic System, making it an exceptionally important taxon in global chronostratigraphy.
Specimen Details:
- Origin: Nürtingen, Baden-Württemberg, Germany
- Age: Hettangian Stage, Early Jurassic (~201 million years old)
- Scale: Scale rule square/cube = 1cm. Please refer to the photo for accurate dimensions
- Condition: Selected for completeness, stratigraphic importance, and detail
- Photo: The fossil shown in the image is the exact specimen you will receive
Certification & Authenticity: All of our fossils are 100% genuine and come with a Certificate of Authenticity. We personally select each specimen to meet high standards of scientific, educational, and collector interest.
This rare Psiloceras (Discamphiceras) nuertingense fossil is an exceptional piece of palaeontological history—representing the dawn of the Jurassic and a key moment in ammonite evolution. Ideal for serious collectors, museum curation, or geological study.






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