Description
RARE PARKINSONIA FOSSIL AMMONITE – Jurassic Coast, Dorset, UK
Species: Parkinsonia sp.
Geological Formation: Inferior Oolite Group
Geological Stage: Middle Jurassic (Bajocian)
Locality: Burton Bradstock, Dorset, United Kingdom
Discovery Date: 30 April 2025
Discovered by: Alister and Alison
Prepared by: Alison
Authenticity: Comes with Certificate of Authenticity
Scale: Cube in photo = 1cm. Full dimensions shown in image.
Collection: Alice Purnell Collection
GEOLOGICAL CONTEXT & TAXONOMY:
- Order: Ammonitida
- Superfamily: Stephanoceratoidea
- Family: Parkinsoniidae
- Genus: Parkinsonia
- Stage: Bajocian
- Formation: Inferior Oolite Group
- Depositional Environment: Shallow marine carbonate shelf; the Inferior Oolite represents oolitic limestones formed in a warm, tropical sea with periodic influx of fine siliciclastic material.
- Zone (likely): Parkinsonia zone (Upper Bajocian), though exact subzone not specified.
- Biozone: The Parkinsonia parkinsoni zone is commonly used as a stratigraphic marker in the upper Bajocian of southern England.
- Notable Features: Ammonites of the Parkinsonia genus are known for their large, planispiral shells with strong ribbing, often with bifurcating ribs and keeled venter. Excellent biostratigraphic importance due to their widespread geographic and stratigraphic presence.
- Formal Description: The genus Parkinsonia was first established by Sowerby in 1822, based on abundant Bajocian ammonite fauna of England.
ABOUT THE SPECIMEN:
This is a fine example of a Jurassic ammonite from the world-renowned Jurassic Coast of Dorset. It was discovered by our team members Alister and Alison at Burton Bradstock on 30 April 2025, and meticulously cleaned, prepped, and treated by Alison. The specimen has been selected for its scientific and aesthetic value, and is shown in the photos with a 1cm scale cube for accurate sizing.
Fossils from the Inferior Oolite Group are well-known for their quality and scientific importance. This specimen is an authentic representative of Parkinsonia, a genus frequently used in correlating Jurassic strata across Europe.
WHAT YOU RECEIVE:
- Genuine Parkinsonia fossil ammonite
- Stratigraphic info: Inferior Oolite, Bajocian (Middle Jurassic)
- Location: Burton Bradstock, Dorset, UK
- Collector & preparer provenance: Alister & Alison
- Certificate of Authenticity included
- Carefully packed with full photo documentation
SUMMARY:
A rare and expertly prepared fossil ammonite of the genus Parkinsonia from the iconic Jurassic Coast of England. A choice specimen for any collector, geologist, educational display, or fossil enthusiast. Backed by provenance and authenticity from the Alice Purnell Collection.
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