Description
RARE 10-Inch Durotrigensia dorsetensis Ammonite Fossil – Jurassic Coast, Dorset
This exceptional and rare ammonite fossil is a prime specimen of Durotrigensia dorsetensis, unearthed from the prestigious fossil site at Burton Bradstock on the UK’s Jurassic Coast. Encased within the Inferior Oolite Formation, this fossil represents the ancient marine environments of the Middle Jurassic period, specifically the Bajocian stage.
Fossil & Geological Details:
- Species: Durotrigensia dorsetensis
- Order: Ammonitida
- Superfamily: Stephanoceratoidea
- Family: Unknown (placed tentatively within Stephanoceratoidea based on suture pattern and coiling)
- Geological Formation: Inferior Oolite
- Stage: Bajocian (approx. 170–168 million years ago)
- Location: Burton Bradstock, Dorset, UK
- Depositional Environment: Warm, shallow epicontinental sea with calcareous sedimentation
- Biozone: Likely Zigzag or adjacent ammonite zones, consistent with regional stratigraphy
- Morphology Features: This specimen exhibits strong ribbing, involute coiling, and a well-preserved body chamber. The preservation detail is remarkable for a specimen of this size.
Specimen Information:
- Size: Approx. 10 inches in diameter (see scale cube photo for verification)
- Discovery Date: 17 January 2025
- Collected By: Alister and Alison (UKGE Team)
- Preparation: Professionally cleaned and treated by Alison to museum-grade standard
- Authenticity: Comes with a Certificate of Authenticity from UKGE
- Image: The item shown is the exact specimen you will receive
Why This Fossil is Special: This Durotrigensia dorsetensis is an impressive ammonite both for its sheer size and the quality of preservation. The detailed ribbing and intact sutures make it a standout example of the species. Its origin from the Jurassic Coast World Heritage Site adds historic and scientific value.
Perfect For: Collectors of rare ammonites, educational institutions, fossil galleries, and anyone passionate about the deep-time history of Earth’s marine life.
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.






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